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Shop By Brand

The Following brands are available based on your search.

  • Airtex
    Airtex
  • Cardone
    Cardone
  • Gates
    Gates

Best Selling Genuine Western Star Water Pumps

  • We Stock the following top leading brands, including Airtex, Cardone, Gates
  • Constantly Updated Inventory of Western Star Replacement Water Pump Parts

We stock Water Pump parts for most Western Star models, including 3700, 3800, 4700, 4800, 4900, 4900E, 4900EX, 4900FA, 4900SA, 5800, 5900, 6900, 6900XD, WSH.

Airtex
2000 Western Star 3700 Engine Water Pump 6 Cyl 7.2L Airtex

P311-10B48DC    AW6248  New

Qty:
$106.14
Airtex Engine Water Pump
  • New Water Pump
  • w/3.75" Pulley and 1 Unthreaded Hose Connection
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2000 - Western Star 3700 L - 441
Airtex
2000 Western Star 3700 Engine Water Pump 6 Cyl 7.2L Airtex

P311-0338E5C    AW6245  New

Qty:
$175.04
Airtex Engine Water Pump
  • New Water Pump
  • w/3.75" Pulley and 2 Unthreaded Hose Connections
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2000 - Western Star 3700 L - 441
Airtex
2000 Western Star 3700 Engine Water Pump 6 Cyl 7.2L Airtex

P311-4EBC16B    AW6353  New

Qty:
$146.92
Airtex Engine Water Pump
  • New Water Pump
  • w/4.37" Pulley
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2000 - Western Star 3700 L - 441
Airtex
1993 Western Star 3800 Engine Water Pump 6 Cyl 14.6L Airtex

P311-4DB0E56    AW2093  New

Qty:
$400.47
Airtex Engine Water Pump
  • New Water Pump
  • E Eng, w/Dished Drive Gear, Not Interchangeable With 3406 B/C
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1993 - Western Star 3800 L 14636 893
Airtex
2003 Western Star 4900SA Engine Water Pump 6 Cyl 10.8L Airtex

P311-180F935    AW6695  New

Qty:
$430.82
Airtex Engine Water Pump
  • New Water Pump
  • Short Shaft
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2003 - Western Star 4900SA L 10834 661
Airtex
1983 Western Star 4800 Engine Water Pump 6 Cyl 14.0L Airtex

P311-17510AE    AW2044  New

Qty:
$101.54
Airtex Engine Water Pump
  • New Water Pump
  • w/4" Impeller
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1983 - Western Star 4800 L 14013 855
Airtex
1985 Western Star 4800 Engine Water Pump 6 Cyl 14.0L Airtex

P311-575A538    AW2062  New

Qty:
$92.41
Airtex Engine Water Pump
  • New Water Pump
  • Non Suitcase Style Pump
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1985 - Western Star 4800 L 14013 855
Airtex
1985 Western Star 4800 Engine Water Pump 6 Cyl 14.0L Airtex

P311-3138D40    AW2032  New

Qty:
$106.22
Airtex Engine Water Pump
  • New Water Pump
  • Suitcase Pump, w/4 1/2" Impeller
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1985 - Western Star 4800 L 14013 855
Airtex
1981 Western Star 4800 Engine Water Pump 6 Cyl 14.0L Airtex

P311-37CE9BF    AW2096  New

Qty:
$62.94
Airtex Engine Water Pump
  • New Water Pump
  • Idler Assembly
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1981 - Western Star 4800 L 14013 855
Airtex
1981 Western Star 4800 Engine Water Pump 6 Cyl 14.0L Airtex

P311-5569250    AW2001  New

Qty:
$106.22
Airtex Engine Water Pump
  • New Water Pump
  • Suitcase Pump, w/4 1/2" Impeller
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1981 - Western Star 4800 L 14013 855
Airtex
1999 Western Star 4900 Engine Water Pump 6 Cyl 8.3L Airtex

P311-1CA00D6    AW6661  New

Qty:
$249.45
Airtex Engine Water Pump
  • New Water Pump
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
1999 - Western Star 4900 L 8277 505
Airtex
2007 Western Star 4900SA Engine Water Pump 6 Cyl 15.0L Airtex

P311-28B602A    AW6151  New

Qty:
$220.72
Airtex Engine Water Pump
  • New Water Pump
  • w/One Piece Assy, 10 Rib Pulley
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2007 - Western Star 4900SA L 15000 915
Airtex
2007 Western Star 4900SA Engine Water Pump 6 Cyl 15.0L Airtex

P311-0E6E77F    AW6344  New

Qty:
$306.32
Airtex Engine Water Pump
  • New Water Pump
  • w/One Piece Assy, 12 Rib Pulley
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2007 - Western Star 4900SA L 15000 915
Airtex
2007 Western Star 4900SA Engine Water Pump 6 Cyl 15.0L Airtex

P311-2D2635B    AW6694  New

Qty:
$454.57
Airtex Engine Water Pump
  • New Water Pump
  • w/Two Piece Assy, Pump Only
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2007 - Western Star 4900SA L 15000 915
Cardone
1990 Western Star 4800 Engine Water Pump 6 Cyl 14.0L Cardone - Reman. A-1 CARDONE Water Pump

P311-3EECB7E    59-8215  Remanufactured

Qty:
$141.41
Cardone Engine Water Pump
  • Remanufactured Water Pump
  • Reman. A-1 CARDONE Water Pump
  • Product Attributes:
    • Casting Number: 1741 10 C
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 3.34
    • Hub Height (mm): 84.94
    • Impeller Vane Quantity: 8
    • Material: Aluminum, Cast Iron, Steel
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 0
    • Package Contents: Water Pump, Gaskets
    • Product Condition: Remanufactured
    • Pulley Included: Yes
    • Pulley Type: Serpentine
    • Rotation: Clockwise
  • CARDONE Remanufactured Water Pumps are re-engineered, built and tested to match O.E. performance. Each unit features new, O.E.-supplied unitized seals and application-specific bearings to ensure long-lasting, trouble-free product life. With 100% leak and hub-pull testing, CARDONE Remanufactured Water Pumps provide peace of mind for the long haul.
Brand: Cardone
Additional Fitment Information:
Vehicle Block CC CID
1990 - Western Star 4800 L 14013 855
Cardone
Qty:
$68.32
Cardone Engine Water Pump
  • New Water Pump
  • New CARDONE SELECT Water Pump
  • Product Attributes:
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 3.52
    • Hub Height (mm): 89.41
    • Impeller Vane Quantity: 5
    • Material: Cast Iron
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 0
    • Package Contents: Water Pump, Gaskets
    • Product Condition: New
    • Pulley Included: Yes
    • Pulley Type: Flat
    • Rotation: Counter-clockwise
  • Building on decades of experience using reverse engineering to remanufacture automotive pumps, CARDONE engineers have meticulously designed our CARDONE New Water Pumps to match O.E. performance. Each unit is 100% leak and hub-pull tested to ensure reliability. Supplied with O.E.-grade unitized seals, CARDONE New Water Pumps provide O.E. performance you can rely on.
Brand: Cardone
Additional Fitment Information:
Vehicle Block CC CID
1990 - Western Star 3800 L 8277 505
Gates
2008 Western Star 4900FA Engine Water Pump 6 Cyl 12.7L Gates - Water Pump (Heavy-Duty)

P311-0E2E87B    46002HD  New

RW6123 , 46002HD , WP-HD6545 , CP2131 , FWP-HD6545 , US60P , 23522707 , 99325HD , 7127X , 23526039 , 23539602 , 946002HD

Qty:
$243.33
Gates Engine Water Pump
  • W/Weep Chamber
  • Water Pump (Heavy-Duty)
  • Product Attributes:
    • Contents: Water Pump, 3 Plugs, O-ring
    • Drive Style: Accessory Belt
    • Housing: Cast Iron
    • Impeller Material: Cast Iron
    • Includes Back Housing: No
    • Includes Thermostat & Housing: No
    • Number of Outlets: 7
    • Timing Belt Driven: No
Brand: Gates
Additional Fitment Information:
Vehicle Block CC CID Fuel Type
2008 - Western Star 4900FA L 12686 774 DIESEL
Gates
1990 Western Star 4900 Engine Water Pump 6 Cyl 14.6L Gates - Water Pump (Heavy-Duty)

P311-5D41D41    45009HD  New

18-1149 , 445013 , 20068 , RW1194 , 6006 , FP1946 , PWP-HD6006 , 45009HD , WP-HD6006 , AW2035 , US2035 , 252-341 , 945009HD , 7C4957 , 55-2035 , DWP-HD6006 , 4006 , 1354926 , 4-HD6006 , 10R482 , 2006 , 51-1610 , 99133 , 45009 , 10R0482 , 5591712 , 7006X , 7W7019 , 196-2035

Qty:
$262.94
Gates Engine Water Pump
  • W/Flat Gear
  • Water Pump (Heavy-Duty)
  • Product Attributes:
    • Contents: Water Pump, 2 Gaskets, 5 O-rings
    • Drive Style: Accessory Belt
    • Housing: Cast Iron
    • Impeller Material: Cast Iron
    • Includes Back Housing: No
    • Includes Thermostat & Housing: No
    • Number of Outlets: 2
    • Rotation of Impeller: Standard
    • Timing Belt Driven: No
Brand: Gates
Additional Fitment Information:
Vehicle Block CC CID Fuel Type
1990 - Western Star 4900 L 14636 893 DIESEL
Gates
1990 Western Star 3800 Engine Water Pump 6 Cyl 8.3L Gates - Water Pump (Heavy-Duty)

P311-465D91E    42352HD  New

FP2285 , RW6077 , 20076 , 6077 , 42352 , 18-1419 , 3802081 , 3806180 , 3806180RX , 240061 , 3913430 , 252-512 , PWP9008 , CP2047 , AW2047 , 42352HD , US740 , US740H , BWP-9008 , 2-9008 , 55-2047 , 3907808 , 51-1618 , WP-9008 , 3804883 , 3804883RX , 99317HD , 97149 , 7076X , 2076 , 5591412 , 942352HD , 196-2047

Qty:
$117.19
Gates Engine Water Pump
  • W/Short Nose W.P.
  • Water Pump (Heavy-Duty)
  • Product Attributes:
    • Contents: Water Pump
    • Drive Style: Accessory Belt
    • Housing: Cast Iron
    • Impeller Material: Stamped Steel
    • Includes Back Housing: No
    • Includes Thermostat & Housing: No
    • Number of Outlets: 2
    • Rotation of Impeller: Standard
    • Timing Belt Driven: No
Brand: Gates
Additional Fitment Information:
Vehicle Block CC CID Fuel Type
1990 - Western Star 3800 L 8277 505 DIESEL
Gates
1997 Western Star 3800 Engine Water Pump 6 Cyl 10.8L Gates - Water Pump (Heavy-Duty)

P311-4C8702D    43307HD  New

4076 , RW4076 , 6076 , PWP-HD6076 , 2882144 , 540076 , AW2091 , US2203 , 4955705 , 943307HD , 3800737 , 3800737RX , 3803403RX , 43307 , 43307HD , CP2091 , CWP-HD6076 , 6-HD6076 , 55-2091 , 7072X , WP-HD6076 , 3803403 , 99312HD , 2072 , 20103 , 99181

Qty:
$196.74
Gates Engine Water Pump
  • Water Pump (Heavy-Duty)
  • Product Attributes:
    • Contents: Water Pump
    • Drive Style: Accessory Belt
    • Housing: Cast Iron
    • Impeller Material: Cast Iron
    • Includes Back Housing: No
    • Includes Thermostat & Housing: No
    • Number of Outlets: 1
    • Rotation of Impeller: Standard
    • Timing Belt Driven: No
Brand: Gates
Additional Fitment Information:
Vehicle Block CC CID Fuel Type
1997 - Western Star 3800 L 10834 661 DIESEL