SKU: 87563340547

2003-2005 Ram HD Coolant Bypass Kit 003-05 Auto Trans with Stainless Steel Braided Line (FPE-CLNTBYPS-CUMMINS-0305-SS)

Sale price$180.45 Regular price$200.50
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Description

2003-2005 Ram HD Coolant Bypass Kit 003-05 Auto Trans with Stainless Steel Braided Line (FPE-CLNTBYPS-CUMMINS-0305-SS)The Fleece Performance Cummins Coolant Bypass Kit 003 05 Auto Trans 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

The Fleece Performance Cummins Coolant Bypass Kit 003-05 Auto Trans 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 and up 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
  • Transmission: Automatic
  • 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: 87563340547

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★★★★★ 5
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Reviewed in the United States on April 30, 2026
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Happywander
Alexandria, US
★★★★★ 5
Sturdy and easy to assemble.
Size: Rustic Brown, Style: Standard, Size: Rustic Brown, Style: Standard
Nice bar cart. Easy to put together and seems very sturdy.
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Reviewed in the United States on February 6, 2026
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Holly
Fort Morgan, US
★★★★★ 4
Cute and good product!
Only thing wrong was the bottom of the top tray had a gap between the side and the bottom and a small cosmetic damaged spot where the screw went through too far. Other than that, it is good for my purpose of a coffee cart for a dorm room. It’s really cute and bigger than I thought it would be.
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Reviewed in the United States on July 6, 2024
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Kathy Wolfe
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★★★★★ 5
Liquor cart
Size: Rustic Brown, Style: Standard, Size: Rustic Brown, Style: Standard
Excellent quality nice looking easy to build.
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tbonemack
Draper, US
★★★★★ 5
Great bar carts!!
Size: Rustic Brown, Style: Standard, Size: Rustic Brown, Style: Standard
They are excellent quality. Very easy to put together. They look great!!
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