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Shop By Brand

The Following brands are available based on your search.

  • Dayco
    Dayco
  • Gates
    Gates

Best Selling Genuine Mack Radiator Hoses

  • We Stock the following top leading brands, including Dayco, Gates
  • Constantly Updated Inventory of Mack Replacement Radiator Hose Parts

We stock Radiator Hose parts for most Mack models, including CH, CHU, CL, CM, CS200P MidLiner, CS250P MidLiner, CS300P MidLiner, CS300T MidLiner, CT, CTP, CV, CXP, CXU, DM, DMM, F, GU4, GU5, GU7, GU8, LE, LEU, MC, MH, MR, MRU, MS200P MidLiner, MS250P MidLiner, MS300P MidLiner, MS300T MidLiner, R, RB, RD, RL, RM, RS, RW, RWL, RWS, WL, WS.

Dayco
1981 Mack MS300P Mid-Liner Radiator Coolant Hose - Lower Dayco

P311-0F93009    70739  New

Qty:
$15.47
Dayco Radiator Coolant Hose  Lower
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 13 3/4
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1981 - Mack MS300P Mid-Liner Lower
Dayco
1984 Mack MS200P Mid-Liner Radiator Coolant Hose - Upper Dayco

P311-0F93009    70739  New

Qty:
$15.47
Dayco Radiator Coolant Hose  Upper
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 13 3/4
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1984 - Mack MS200P Mid-Liner Upper
Dayco
1986 Mack CS200P Mid-Liner Radiator Coolant Hose - Upper Dayco

P311-0F93009    70739  New

Qty:
$15.47
Dayco Radiator Coolant Hose  Upper
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 13 3/4
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1986 - Mack CS200P Mid-Liner Upper
Dayco
1985 Mack RW Radiator Coolant Hose - Upper - Pipe To Engine 6 Cyl 14.6L Dayco

P311-3208137    70922  New

Qty:
$20.63
Dayco Radiator Coolant Hose  Upper - Pipe To Engine
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2 1/2
    • End 2 Inside Diameter: 2 1/2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 19
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1985 - Mack RW L 14636 893 Upper - Pipe To Engine
Dayco
1983 Mack MH Radiator Coolant Hose - Upper - Pipe To Engine 6 Cyl 14.0L Dayco

P311-50BE661    70921  New

Qty:
$24.95
Dayco Radiator Coolant Hose  Upper - Pipe To Engine
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2 1/4
    • End 1 Outside Diameter: 2 17/32
    • End 2 Inside Diameter: 2 1/4
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 22 1/2
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1983 - Mack MH L 14013 855 Upper - Pipe To Engine
Dayco
2012 Mack GU4 Radiator Coolant Hose - Upper - Pipe To Radiator Dayco

P311-3208137    70922  New

Qty:
$20.63
Dayco Radiator Coolant Hose  Upper - Pipe To Radiator
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2 1/2
    • End 2 Inside Diameter: 2 1/2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 19
Brand: Dayco
Additional Fitment Information:
Vehicle Position
2012 - Mack GU4 Upper - Pipe To Radiator
Dayco
1991 Mack CM Radiator Coolant Hose - Lower - Pipe To Engine 6 Cyl 8.3L Dayco

P311-24C43F2    71569  New

Qty:
$9.27
Dayco Radiator Coolant Hose  Lower - Pipe To Engine
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2 3/8
    • Hose Type: Dual I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 5
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1991 - Mack CM L 8277 505 Lower - Pipe To Engine
Dayco
1985 Mack RW Radiator Coolant Hose - Lower - Pipe To Engine 6 Cyl 14.0L Dayco

P311-36F68AD    70870  New

Qty:
$23.61
Dayco Radiator Coolant Hose  Lower - Pipe To Engine
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 3
    • End 2 Inside Diameter: 3
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 12
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1985 - Mack RW L 14013 855 Lower - Pipe To Engine
Dayco
2012 Mack GU4 Radiator Coolant Hose - Lower - Pipe To Engine Dayco

P311-4BAF783    71010  New

Qty:
$12.04
Dayco Radiator Coolant Hose  Lower - Pipe To Engine
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2 1/4
    • End 2 Inside Diameter: 2 1/2
    • Hose Type: Dual I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 7
Brand: Dayco
Additional Fitment Information:
Vehicle Position
2012 - Mack GU4 Lower - Pipe To Engine
Dayco
Qty:
$17.76
Dayco Radiator Coolant Hose  Lower - Pipe To Radiator
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 18
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1981 - Mack MS200P Mid-Liner Lower - Pipe To Radiator
Dayco
1991 Mack CM Radiator Coolant Hose - Lower - Pipe To Radiator 6 Cyl 8.3L Dayco

P311-55DC73A    71530  New

Qty:
$17.27
Dayco Radiator Coolant Hose  Lower - Pipe To Radiator
  • Cut to Fit
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2 5/16
    • Hose Type: Dual I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 9 1/2
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1991 - Mack CM L 8277 505 Lower - Pipe To Radiator
Dayco
Qty:
$13.92
Dayco Radiator Coolant Hose  Lower - Thermostat To Pipe
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 13 1/4
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1981 - Mack MS200P Mid-Liner Lower - Thermostat To Pipe
Dayco
Qty:
$14.48
Dayco Radiator Coolant Hose  Lower - Water Pump To Pipe
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2
    • End 2 Inside Diameter: 2
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 10
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1981 - Mack MS200P Mid-Liner Lower - Water Pump To Pipe
Dayco
1991 Mack CM Radiator Coolant Hose - Upper 6 Cyl 8.3L Dayco

P311-1768C2A    70914  New

Qty:
$14.25
Dayco Radiator Coolant Hose  Upper
  • Curved Radiator Hose
  • Product Attributes:
    • Color: Black
    • Contains Heat Shield: N
    • Contains Protective Sleeve: N
    • End 1 Inside Diameter: 2 1/4
    • End 2 Inside Diameter: 2 1/4
    • Hose Type: Single I.d. Hose
    • Material: Epdm
    • SAE Specification: Sae J20r4 Class D-1, Sae J1684 Type Ec
    • Trunk Height: 10 3/4
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1991 - Mack CM L 8277 505 Upper
Dayco
1981 Mack MS200P Mid-Liner Radiator Coolant Hose - Lower - Pipe To Radiator Dayco

P311-27071E9    82111GL  New

Qty:
$49.54
Dayco Radiator Coolant Hose  Lower - Pipe To Radiator
  • Flex Radiator Hose
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1981 - Mack MS200P Mid-Liner Lower - Pipe To Radiator
Dayco
1986 Mack CS300P Mid-Liner Radiator Coolant Hose - Lower Dayco

P311-42250B3    82101GL  New

Qty:
$44.04
Dayco Radiator Coolant Hose  Lower
  • Flex Radiator Hose
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1986 - Mack CS300P Mid-Liner Lower
Dayco
1981 Mack MS200P Mid-Liner Radiator Coolant Hose - Upper Dayco

P311-394E97A    82071GL  New

Qty:
$29.58
Dayco Radiator Coolant Hose  Upper
  • Flex Radiator Hose
Brand: Dayco
Additional Fitment Information:
Vehicle Position
1981 - Mack MS200P Mid-Liner Upper
Dayco
1991 Mack CM Radiator Coolant Hose - Upper 6 Cyl 8.3L Dayco

P311-4F714BF    82171GL  New

Qty:
$27.86
Dayco Radiator Coolant Hose  Upper
  • Flex Radiator Hose
Brand: Dayco
Additional Fitment Information:
Vehicle Block CC CID Position
1991 - Mack CM L 8277 505 Upper
Gates
1989 Mack MH Radiator Coolant Hose - Upper 8 Cyl 16.4L Gates

P311-0829E3B    24240  New

Qty:
$58.22
Gates Radiator Coolant Hose  Upper
  • Coolant Hose - Green Stripe® 2-Ply Straight (3 Ft. Lengths)
  • Straight Coolant Hose (Heavy-Duty 2-Ply)
  • Suggested Purchase Quantity: 4
    • Most jobs typically require 4 of this item.
Brand: Gates
Additional Fitment Information:
Vehicle Block CC CID Fuel Type Position
1989 - Mack MH - - 998 DIESEL Upper
Gates
1981 Mack RS Radiator Coolant Hose - Lower - Engine To Pipe 6 Cyl 9.0L Gates

P311-307A4B0    21042  New

Qty:
$24.98
Gates Radiator Coolant Hose  Lower - Engine To Pipe
  • Coolant Hose - Molded
  • Cut to fit
  • Molded Coolant Hose
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Gates
Additional Fitment Information:
Vehicle Block CC CID Fuel Type Position
1981 - Mack RS V 9047 552 DIESEL Lower - Engine To Pipe

Latest Mack Repair and Radiator Hose Installation Advice

CarJunky AutoAdvice

2000 Honda Civic overheats only with AC on at idle

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From nisbett on 2000 Honda Civic overheats only with AC on at idle

I have a 2000 Honda Civic. It overheats only when the AC is on and the vehicle is not moving. All other conditions, the temperature gauge is at the exact same normal spot. After coming to a stop with the AC on, in about 5 seconds the gauge will rise quickly to the top.

The first time it happened, I added a little antifreeze to the radiator (it was a little low). Since then, the water level is always fine. The radiator electric fan and the AC condensor fan are both on while idling. Are they maybe mutli-speed levels and they aren't kicking up to the higher speed when needed?

The top radiator hose is hot, so the thermostat appears to be open.

I can flush the radiator and change the thermostat. But I would expect if it is just not quite flowing enough that the temperature would be a little high for other conditions as well, and that the extra load of the AC would cause it to run a little hotter than without the AC on, rather than the extreme fluctuation.

Suggestions?

Response From Tom Greenleaf

Flush wouldn't hurt and don't exceed a 50/50 mix of antifreeze and water. See what the flush out stuff looks like. May be time for a new radiator but check as much as you can. DON'T ALLOW OVERHEATING - a tow is lot's cheaper!

T

Response From nickwarner Top Rated Answer

Do you live or drive in an area with a lot of dirt roads and dust? If so I've seen a good spraying through of the radiator and condensor improve things. Most likely not the case and leaning toward DS's theory but worth looking into. I work on a lot of heavy trucks and they pack dirt into everywhere. Had a Mack dumptruck overheating under load and it was packed so bad I had to pull the condensor and CAC off the radiator and clean them all individually. Put it back together and it ran perfect temps with cold AC.

Response From Discretesignals

After coming to a stop with the AC on, in about 5 seconds the gauge will rise quickly to the top. That appears to be more of a gauge/sender issue than actual overheating. Takes a little longer than 5 secs for an engine to overheat.

Be curious to see what the actual coolant temperature is at the computer or by using an inferred thermometer at the sender body.

When the electric coolant fan is running is the air blowing out hot? The upper hose will be hot on a Honda because the thermostat is on the lower hose end. The engine would likely be overheating idling and cruising speeds with a stuck closed T stat.