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The Following brands are available based on your search.

  • Walker
    Walker

Best Selling Genuine International Mufflers

  • We Stock the following top leading brands, including Walker
  • Constantly Updated Inventory of International Replacement Muffler Parts

We stock Muffler parts for most International models, including 1652SC, Cargostar, Scout II, 3600, 3700, 3800, 3900FC, 4700, 4900, 8100, 8200, 8300, 9300, 9700.

Walker
Qty:
$36.82
  • ; Must be installed backwards.
  • Walker SoundFX Direct Fit Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 4.250
    • Body Length: 19.000
    • Body Width: 9.750
    • Finish: Aluminized
    • Fitment: Direct Oe Replacement
    • Inlet 1 Inside Diameter: 2.250
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 19.000
    • Max Year Covered: 1995
    • Min Year Covered: 1967
    • Most Popular Make / Model: Jeep Grand Cherokee
    • Most Popular Year: 1995
    • Muffler Body Height: 4.250
    • Muffler Body Length: 19.000
    • Muffler Body Width: 9.750
    • Muffler Color / Finish: Aluminized
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 2.250
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Centered
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 2.250
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 25.750
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Outlet 1 Inside Diameter: 2.250
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Center
    • Overall Length: 25.750
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO: 207936
Brand: Walker
Additional Fitment Information:
Vehicle Wheel FeedBase Block Engine CID CC
1979 - International Scout II 100.0 V 8 Cyl 5.6L 345 -
Walker
2000 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; with 152" Wheelbase; with Mor-Ryde Suspension; Excludes RH Rear Exit Tail Pipe; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
2000 - International 3800 DT466
Walker
1998 International 3600 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • with Air Suspension; 170" - 276" Wheelbase; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1998 - International 3600 DT466
Walker
1995 International 3600 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 170" - 276" Wheelbase; CODE 07AAS; LH Exit Tail Pipe; w/o Air Suspension; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1995 - International 3600 DT466
Walker
1999 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 170" - 276" Wheelbase; with Mor-Ryde Suspension; Excludes RH Rear Exit Tail Pipe; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1999 - International 3800 T444E
Walker
2002 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • with Air Ride Suspension; School Bus
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
2002 - International 3800 T444E
Walker
1996 International 3600 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; with Code 10NXW Handicap Pkg.; RH Rear Exit Tail Pipe; 152" - 276" Wheelbase; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1996 - International 3600 T444E
Walker
1990 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 193" - 276" Wheelbase; with Varirate Air Ride Suspension; Excludes Allison MTB643 Auto. Transmission
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1990 - International 3800 DT360
Walker
1994 International 3600 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • with Air Suspension; with 152" Wheelbase; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1994 - International 3600 DT408
Walker
1992 International 3700 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 152" - 170" Wheelbase; with Varirate Air Ride Suspension; Excludes Allison MTB643 Auto. Transmission
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1992 - International 3700 DT360
Walker
1993 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; School Bus; 152" - 276" Wheelbase; LH Side Mounted; Side exit Tail Pipe exits in front of rear wheel.
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1993 - International 3800 DTA360
Walker
1991 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 170" - 276" Wheelbase; with Allison MTB643 Auto. Transmission; with Air Suspension; Built Before 12-10-90
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1991 - International 3800 DT466
Walker
1996 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; with 152" Wheelbase; with Variable Rate Suspension; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1996 - International 3800 T444E
Walker
1992 International 3700 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 152" - 170" Wheelbase; with Mor-Ryde Suspension; Left Hand; with Rear Exit; Excludes Allison MTB643 Auto. Transmission
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1992 - International 3700 DT360
Walker
1995 International 3600 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 152" - 276" Wheelbase; CODE 07AAS; Tail Pipe exits front of LH Rear Wheel; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1995 - International 3600 DT408
Walker
1990 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; 193" - 276" Wheelbase; with Mor-Ryde Suspension; Left Hand; with Rear Exit; Excludes Allison MTB643 Auto. Transmission
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1990 - International 3800 DT466
Walker
1991 International 4900 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; Right Hand Side Mounting; Except Beverage Body
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1991 - International 4900 DTA360
Walker
1997 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; with 152" Wheelbase; CODE 07AAS; Allison MTB643, MTB653DR Automatic Transmission; LH Exit Tail Pipe; w/o Air Suspension; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1997 - International 3800 DT466
Walker
1998 International 3800 Exhaust Muffler Walker - Walker Heavy Duty Muffler

P311-44AD150    22551  New

Qty:
$107.59
  • ; with 152" Wheelbase; CODE 07AAS; LH Exit Tail Pipe; w/o Air Suspension; w/o Converter
  • Walker Heavy Duty Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 8.250
    • Body Length: 30.000
    • Body Width: 11.500
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 3.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 30.000
    • Max Year Covered:
      • 1993
      • 2004
    • Min Year Covered:
      • 1990
      • 1991
    • Most Popular Make / Model:
      • International 3800
      • International 3900fc
    • Most Popular Year:
      • 1992
      • 1999
    • Muffler Body Height: 8.250
    • Muffler Body Length: 30.000
    • Muffler Body Width: 11.500
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 3.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Offset
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 4.000
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 36.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Notas: Arc Welded
    • Notes: Arc Welded
    • Outlet 1 Inside Diameter: 4.000
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Offset
    • Overall Length: 36.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 1041
      • 232447
Brand: Walker
Additional Fitment Information:
Vehicle Engine Designation
1998 - International 3800 DT466
Walker
Qty:
$27.09
  • Walker Products 18113 Fuel Injector Repair Kit
  • ; Must be installed backwards.; Optional; SoundFX Universal for 18230
  • Walker SoundFX Universal Muffler
  • Product Attributes:
    • Automotive Item Grade: Oem Standard Part
    • Body Height: 4.250
    • Body Length: 18.000
    • Body Width: 8.813
    • CA_Prop65_Lead: Warning: This Product Can Expose You To Chemicals, Including Lead, Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. Www.p65warnings.ca.gov
    • Finish: Aluminized
    • Fitment: Universal
    • Inlet 1 Inside Diameter: 2.500
    • Inlet 1 Type: Pipe Connection
    • Inlet Configuration: Offset
    • Longitud del Cuerpo: 18.000
    • Max Year Covered: 1999
    • Min Year Covered: 1967
    • Most Popular Make / Model: Jeep Grand Cherokee
    • Most Popular Year: 1995
    • Muffler Body Height: 4.250
    • Muffler Body Length: 18.000
    • Muffler Body Width: 8.813
    • Muffler Inlet Configuration: Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Diameter 1: 2.500
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet Configuration: Centered
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Diameter: 2.250
    • Muffler Outlet Diameter Designation: Inside Diameter
    • Muffler Overall Length: 26.000
    • Muffler Shape: Oval
    • Muffler Type: Combination
    • Outlet 1 Inside Diameter: 2.250
    • Outlet 1 Type: Pipe Connection
    • Outlet Configuration: Center
    • Overall Length: 26.000
    • Product Grade: Economy
    • Shape: Oval
    • Terminación: Aluminized
    • Total Part VIO:
      • 465804
      • 497647
  • Walker Products began supplying the fuel system needs of the automotive industry in 1946. Today Walker is one of the largest, privately owned manufacturers of fuel system components and engine sensors, and has served the needs of the worldwide automotive aftermarket. We are committed to supplying products manufactured to meet or exceed OEM standards and specifications. This effort is backed by our own manufacturing, product management and engineering staff to ensure it is maintained and accurate in the production of quality parts, vehicle applications, instruction sheets and technical support. Our products include Carburetor and Fuel Injection Repair Kits, Oxygen Sensors and other Engine Management products such as Throttle Position Sensors, Cam and Crankshaft Sensors, Fuel Injectors, Spark Plug Wires and Gaskets. As an ISO 9001/IATF16949 certified company, we are committed to supplying the highest quality products.
Brand: Walker
Additional Fitment Information:
Vehicle Submodel Wheel FeedBase Block Engine CID CC
1979 - International Scout II Terra 118.0 V 8 Cyl 5.6L 345 -

Latest International Repair and Muffler Installation Advice

CarJunky AutoAdvice

Information

Showing 2 out of 3 Posts | Show 1 Hidden Posts
Question From Guest on Information

I went to acar garage as my carwas making a louder noise than usual. The mechanic said it was due to the baffels but what are they and what do they do ?

Response From dmac0923 Top Rated Answer

this is a pretty general question which will yeild a general answer.


im going to guess that he is talking about your muffler. the internals of a muffler are packing and baffles to deafen the sound emmitted from the engine.

over time the packing degrades and the baffles usually rust apart.

Response From way2old

Yeah, what he said. ^^^^^^^^^^^^^^^^^^

EVAP system in 2005 Nissan xterra

Showing 2 out of 6 Posts | Show 4 Hidden Posts
Question From ericwalker on EVAP system in 2005 Nissan xterra

I have a 2005 Nissan Exterra, the check engine light went on. I got a code for the emission control valve C short. What are the steps in solving this myself before bringing it in to the shop?

Response From Discretesignals

What is the trouble code number? Do you have a volt meter and understand the theory of electrical circuits (including computer circuits and bias voltage) and how to diagnose them?

Response From ericwalker

Thanks for reply...sorry, was out of town for a while..the code showing on tester is PO455..I do know how to test for continuity and voltage..I am not afraid to tackle this, though I am not a mechanic..

Response From Discretesignals

P0455 doesn't have to do with any valve circuit being shorted.

P0455 is a large leak code. Means there is a big leak in the system between the fuel tank and EVAP canister purge volume control solenoid valve.

You need to find a shop that has an EVAP tester/smoke machine to find the leak.

Response From ericwalker Top Rated Answer

Hello,

Thx, your right I have, I looked at code wrong..so could this be a muffler issue or is it internal? I want to diagnose problem as much as possible before calling a mechanic..

Response From ericwalker

Obviously I am not a mechanic..Going to the shop..thx..

white to light blue smoke out of exhaust

Showing 2 out of 11 Posts | Show 9 Hidden Posts
Question From PATSPHAN2006 on white to light blue smoke out of exhaust

I recently had a clutch kit and a 5 speed transmision put in my car..since that was done every morning when i start the car up i get white to light blue smoke comming out of the muffler and its a lot..i drive a 1997 honda civic dx 5 speed.180,000 miles...it also happens if the car sits for a period of like 4 hours or so..but there is no smoke when the car is warmed up. would those repairs be related if not done right?or how can i reduce the smoke if possible

Response From re-tired

THere is no relation to your oil burning and the clutch job . With the mileage you've got the only sure way to stop it is a rebuild or reman eng.

Response From Hammer Time

PATSPHAN?????????..........REALLY?

You live in West Palm beach and you root for the nasty Pats?


Response From Sidom

uh oh..........someone better fetch the sheriff.....Thars gonna b truble

Response From re-tired

Cant we all just love each other It's just a game












that miami usally wins

Response From Blulakr


Cant we all just love each other It's just a game












that miami usally wins Obviously posted before the Jets game

Response From Blulakr Top Rated Answer

To patsfan, if the pcv system is working properly then you have an internal oil sealing problem.

I've seen many honda motors run 200k plus miles with no problem.

You might try replacing the valve stem seals, it's somewhat of a gamble but definately cheaper than new motor.

Response From Hammer Time

It's just a game

Yeah, maybe for you....................LOL

Response From re-tired

read all the post HT

Response From Hammer Time

Yep, missed that stuff hidden near the sig

Response From Sidom

A Phins fan luving a Pat/Jets fan............. Kinda a tall order don't cha thing RT????? Maybe you should shoot for peace in the Middle East 1st........ You know something with better odds of success.....

my truck is running very rough

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From Joe Steadery on my truck is running very rough

I have a 1995 Chevy S-10 Blazer 4.3 V6 (ENG vin code is W )
Ireplaced the CPI and now the truck runs real rough and missfires and hardly moves when in gear as it is missfiring even small backfires when you try to rev it up .

Also after running for a bit the catalytic converter glowed red hot . I replaced the catalytic converter and the #2 oxygen sensor and the spark plugs and it still ran very rough and the converter and the pipe to the muffler still glowed red hot . I didn't replace the #1 O2 sensor in front of the converter should I have replaced it too ? Also after it glowed red do you think that the new #2 O2 sensor and new converter is now bad or can it handle 1 time of being red hot ? Did I ruin the new converter and O2 sensor by running it till it was glowing red hot . The truck also has a fairly new muffler and tail pipe is it possible that it is plugged now do to running with red hot converter . so to recap I have installed a new CPI -Spider fuel Injector assembly and a new Catalytic converter , O2 sensor on downstream side and new spark plugs , air filter and oil too . I checked EGR and its not plugged and plunger moves ok . i checked the cap n rotor and they looked fine . So whats next move ? The truck runs real rough and missfires and hardly moves when put into gear .

Response From Hammer Time Top Rated Answer

Most of that stuff wan't necessary. the Cat is glowing because of either too rich or too lean of mixture. You really need a scan tool to find out which it is. You could have an internal fuel or vacuum leak.


We were typing at the same time Steve.

Response From steve01832

Great minds think alike Desi. lol

Steve

Response From steve01832

Joe, usually when a converter gets cherry red it is due to an ignition problem, usually. What is going on is there is a lot of unburned fuel going out an exhaust valve and it is being burned in the converter. That's why it cherries up. It is also possible that the vehicle is running excessively rich, or has a bad cylinder.
You may want to start by hooking up a fuel pressure guage. If the pressure is ok, start checking the ignition system. Could be a cracked cap, bad plug, or bad plug wire. I have seen failing ignition modules cause this, but very few and far between. Maybe 3 or 4 times in the 26 years I've been twisting a wrench.

Steve

Emissions

Showing 2 out of 5 Posts | Show 3 Hidden Posts
Question From Guest on Emissions

My 1992 Plym Acclaim w/2.5L 4 cyl failed emissions insp for NOx reading 1529 on a 970 max std. I replaced cat converter as muffler shop dtermined it to be bad. NOx went down to 1469 still failing. I do not know where to look next. Any ideas?

Response From DanD

Does this engine have and EGR (exhaust gas recalculation) valve?
Some did some didn’t in 92 and I can’t remember whether it was the 2.2 or the 2.5 that did?
Depending on whether it does or not will determine which way we go to get this thing to pass the NOX.
There are ways of sneaking a non-EGR engine through a test if all else fails.
Dan.

Response From Guest

I think it does (have an egr valve). I was told that the numbers are much too high to be the EGR valve. Do you disagree?

Response From DanD Top Rated Answer

Do I disagree??
YES!
A properly functioning EGR system on an engine running the way it was intended will reduce NOX emissions by at least 50%! The major contributor to the production of NOX (Oxides of Nitrogen or photochemical Smog) in an internal combustion engine, is load and heat. We can’t do a lot about the load on the engine; the engine has to push the car down the road but we can do something with the heat generated during the combustion process and that’s where the EGR system comes in.
Basically the EGR introduces inert gases (exhaust) back into the combustion chamber to take up space which in turn will reduce internal combustion temperatures. In other words to help fill up the combustion chamber with something that doesn’t burn.
Yes this exhaust gas is hot but nothing compared to the heat generated by the combustion of compressed hydrocarbons and oxygen; again because there’s nothing left in the exhaust gases to burn it has a cooling effect on the over all combustion chamber.
When I say a cooling effect I don’t mean that by having an EGR system repaired you’re going to see the engine temperature gauge suddenly drop. That’s because we’re talking combustion temperatures, which the cooling system of the vehicle has been designed to look after via the thermostat.
I’m an emissions repair tech here in Ontario’s emissions testing program and I have seen so many catalytic converters condemned when yes they may be on the weak side but would still get the job done if the input gases from the engine were down to an acceptable level.
Dan

Response From steve01832

I have cheated on a few customers' cars by replacing the spark plugs with a colder plug. This is more applicable on cars with over 100000 miles on them.

Steve