SKU: 49371642284

Fleece Performance 94-98 12V Coolant Bypass Kit w/ Stainless Steel Braided Line

Sale price$175.39 Regular price$194.88
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

Fleece Performance 94-98 12V Coolant Bypass Kit w/ Stainless Steel Braided LineIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5. 9 6. 7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Application Notes: The 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant.

Installation Instructions
Installation Instructions
Warranty
  • Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation
  • Ensures consistent temperatures across all cylinders
  • Lowers coolant temperature at the rear cylinders
  • Prevents damaging coolant pressure build up

This Part Fits:

Year Make Model Submodel
1994-1998 Dodge Ram 2500 Base
1994-1998 Dodge Ram 3500 Base
Shipping Notes
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Exchange/Return Notes
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SKU: 49371642284

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Spoil 'Em Mary
Carnegie, US
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Size: X-Large, Color: Blue
Looked great, good and warm. Bought to donate to vets so felt good about quality.
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Reviewed in the United States on December 23, 2025
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Tara W.
Battle Creek, US
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Noelle
Phoenix, US
★★★★★ 5
Husband loves it
Size: XX-Large, Color: Army Green
Gave this to my husband as a christmas gift and he really likes it. He says the outfit is really soft, it fits well, and the material seems to be of decent quality. Personally I think the color looks amazing, the material is super soft and not too thick and not too thin.
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Reviewed in the United States on December 28, 2024
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Mandy
Louisville, US
★★★★★ 5
Dogman plus comfort
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Lisa Larcom
Draper, US
★★★★★ 4
very breathable
Size: Large, Color: Gray
Very breathable, my son and my husband share them both.
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Reviewed in the United States on June 19, 2025

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