Fleece Coolant Bypass Kit w/Stainless Steel Braided Line (FPE-CLNTBYPS-CUMMINS-VP-SS) for 1998.5-2002 Cummins 5.9L
$376.95
The Fleece Coolant Bypass Kit with Stainless Steel Braided Line is an aftermarket upgrade for 1998.5–2002 Dodge Ram trucks with the 5.9L Cummins diesel engine. It improves engine cooling by rerouting coolant from the rear cylinders to the thermostat housing, addressing a common issue of uneven cooling that can lead to head gasket failure. The kit features a durable stainless steel braided line, is easy to install, and is ideal for performance or heavy-duty applications, enhancing engine longevity and efficiency.
The Fleece Coolant Bypass Kit w/Stainless Steel Braided Line (FPE-CLNTBYPS-CUMMINS-VP-SS) is a high-quality aftermarket upgrade designed specifically for 1998.5–2002 Dodge Ram trucks equipped with the Cummins 5.9L diesel engine. This kit addresses a common issue in these engines where uneven coolant flow can lead to elevated rear cylinder temperatures, potentially causing head gasket failure. By rerouting coolant from the rear of the engine directly to the thermostat housing, the Fleece bypass kit ensures more balanced cooling throughout the engine. The inclusion of a durable stainless steel braided line adds both strength and reliability, making it ideal for performance builds and heavy-duty applications. Easy to install and engineered for long-lasting performance, this coolant bypass kit is a smart investment for any Cummins owner looking to enhance engine longevity and cooling efficiency.
| Weight | 15.0 lbs |
|---|---|
| Dimensions | 12.0 × 9.0 × 4.0 in |
Fitment
- 1998.5 Dodge Ram 2500/3500 5.9L VP 24V Cummins
- 1999 Dodge Ram 2500/3500 5.9L VP 24V Cummins
- 2000 Dodge Ram 2500/3500 5.9L VP 24V Cummins
- 2001 Dodge Ram 2500/3500 5.9L VP 24V Cummins
- 2002 Dodge Ram 2500/3500 5.9L VP 24V Cummins
Features
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 Performance 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 Performance Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.
*US Trademark Reg. No. 6099979, 6099980, 6099981 and 7659022.
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. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.
For model years 2007 – 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.
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