SKU: 53668178357

1998-2002 Ram HD Coolant Bypass Kit VP 98.5-02 with Stainless Steel Braided Line (FPE-CLNTBYPS-CUMMINS-VP-SS)

Sale price$180.45 Regular price$200.50
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Description

1998-2002 Ram HD Coolant Bypass Kit VP 98.5-02 with Stainless Steel Braided Line (FPE-CLNTBYPS-CUMMINS-VP-SS)The Fleece Performance Cummins Coolant Bypass Kit VP 98. 5 02 with Stainless Steel Braided Line is built to OEM or better standards for diesel truck owners who want a no compromise upgrade. Engineered, manufactured, and supported by Fleece the diesel performance specialists. Features Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with

The Fleece Performance Cummins Coolant Bypass Kit VP 98.5-02 with Stainless Steel Braided Line is built to OEM-or-better standards for diesel truck owners who want a no-compromise upgrade. Engineered, manufactured, and supported by Fleece - the diesel performance specialists.

Features
  • 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.
  • 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.
Specifications
  • Fuel Type: Diesel
  • Engine: 5.9L / 6.7L Cummins
  • Country of Origin: US
Manufacturer Description

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.

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. 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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 53668178357

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Robbiam
Pawtucket, US
★★★★★ 4
A must have kit for the auto
Size: 67pcs
Good little kit. I put it by my spare and it fits perfectly. It’s a solid and versatile kit that’s a must to have in your auto. No leaks or stickiness as the material is good.
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Reviewed in the United States on May 30, 2026
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Mike K.
Los Angeles, US
★★★★★ 5
Complete and Affordable Tire Repair Kit – Reliable and Easy to Use
Size: 67pcs
I really like this tire repair kit — it has everything you need to fix a tire at a very affordable price. The set comes neatly organized in a durable case, making it easy to store and ready whenever you need it. The case is compact and portable, so you can easily keep it in your garage, truck, or shed without taking up much space. I’ve used it twice already to fix my garden tractor tire, and both repairs worked perfectly. The tools, including the T-handle and spiral probe, are sturdy and easy to use, even for tougher tires. The plugs themselves have excellent adhesion, hold air well, and seem very durable. Everything is included in one set, so you don’t need to buy anything extra to get the job done. Overall, a highly practical, reliable, and convenient kit that’s worth every penny.
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Reviewed in the United States on December 6, 2025
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mark buglio
Natrona Heights, US
★★★★★ 5
A++
Size: 67pcs
Good product Works when you’re in a pinch
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Reviewed in the United States on May 24, 2026
S
Verified Purchase
Shahira
Fort Morgan, US
★★★★★ 5
Everything you need
Size: 67pcs
So far I’ve repaired 4 tires in the past few months. This kits save me both time and money. I was able to repair the tires in my driveway and it trout jack stands etc and save about $20-40 each repair doing it myself
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Reviewed in the United States on April 27, 2026
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Chad D.
Fort Morgan, US
★★★★★ 5
Good product
Size: 67pcs
Product was as expected and I'm glad to have it on hand in the event of a tire leak.
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Reviewed in the United States on May 29, 2026

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