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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tm1975
Bozeman, US
★★★★★ 5
Read before attempting.
This book is best read before you attempt a second marraige or even if you have thought of getting a divorce. I read this after getting remarried and found it useful but would have been especially helpful prior to in preparing for a second marriage.
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Reviewed in the United States on March 15, 2012
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Ed Bangle
Chelsea, US
★★★★★ 5
Excellent Snack but price a bit high
Pattern Name: Strip, Size: 10 Packs (Box)
I do not know how they make these things. But Daisy really loves them. Been buying them for a few years now and they still don't go down in price.
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Reviewed in the United States on June 3, 2026
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lolosue
Draper, US
★★★★★ 1
I Received the Old, Outdated Product
Pattern Name: Strip, Size: 10 Packs (Box)
I have been buying these strips for years and my dog loves them so much that they are the ONLY treat he will eat. I ordered a 10 lb. box that arrived 5/14/26 and received old, brown-labeled product that he won’t touch. I had a white-labeled package left from my past order and he will eat those but not the old, most recently received ones. Thankfully, Amazon issued a refund, but I am hesitant to purchase these again.
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Reviewed in the United States on May 15, 2026
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H. Busse
Massapequa, US
★★★★★ 3
Not made in USA
Pattern Name: Strip, Size: 10 Packs (Box), Pattern Name: Strip, Size: 10 Packs (Box)
The product is good but it is not made in the USA. It says Taiwan! That makes me angry because I don’t trust foreign countries for pet foods. It is well known there has been products from another country that actually poisoned US pets. I ordered the box of 10 and have been giving it to my two small dogs. I will be monitoring closely . They should not advertise made in USA when it says made in Taiwan!
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Reviewed in the United States on March 8, 2026
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Florida Grandma
Louisville, US
★★★★★ 5
Highly recommend best googles ever
Pattern Name: Strip, Size: 10 Packs (Box)
Both my dogs get half a one everyday and they are obsessed even a year later.
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Reviewed in the United States on May 24, 2026

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