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USD 359
Part #:

Fleece FPE-CLNTBYPS-0305 Coolant Bypass Kit

Vehicle Fitment:
2003-2005 Dodge 5.9L Diesel (Automatic Transmission) | See full application list below
Part #:
★★★★★ ★★★★★ 6 Reviews
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Description

Keep consistent coolant temperature to all 6 cylinders in your 2003-2005 Dodge 5.9L Diesel with an automatic transmission by installing a Fleece FPE-CLNTBYPS-0305 Coolant Bypass Kit. The factory cooling system handles the job of keeping a stock engine running at optimal temperature. Once performance modifications are introduce, the additional heat generated by turbo, fuel, and tuning upgrades can quickly overwhelm the cooling system. The rear cylinders begin to suffer from a lack of coolant flow, experiencing higher coolant temperatures and the buildup of excessive pressure in the cooling system. This can cause the freeze plugs to blow out or the smaller diameter plugs under the valve cover to fail. 

Fleece's Coolant Bypass Kit utilizes a secondary thermostat which operates based on temperature instead of pressure, ensuring consistent temperatures across all six cylinders. This solves the factory issue of poor coolant flow to the rear cylinders before it ever becomes a problem. The complete kit includes high quality O-ring fittings and AN hose connections with your choice of braided stainless steel or braided black nylon hose for a secure, leak-free installation.

Features:
  • Head Removal Not Required For Installation
  • Temperature Activated Secondary Thermostat
  • Ensures Consistent Coolant Temperature Across All Cylinders
  • Available with Braided Black Nylon or Braided Stainless Steel Hose
  • 1 Year Limited Warranty
Application Notes: 
For trucks equipped with automatic transmissions only.
This coolant bypass kit 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.
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Vehicle Fitment

YEAR MAKE FOR ENGINE SERIES
2003 Dodge 5.9L 24V Cummins
2004 Dodge 5.9L 24V Cummins
2004.5 Dodge 5.9L 24V Cummins
2005 Dodge 5.9L 24V Cummins

Product Options

PART NUMBER HOSE TYPE
FPE-CLNTBYPS-CUMMINS-0305-SS Braided Stainless Steel
FPE-CLNTBYPS-CUMMINS-0305 Braided Black Nylon

Specifications

  • ID 35732
  • Manufacturer Name Fleece Performance
  • Shipping Weight 15.00 lb.
  • Shipping Length 4 in.
  • Shipping Width 9 in.
  • Shipping Height 12 in.
  • Fuel Type Diesel
  • E-Code 4
  • Warranty Info 1 Year Limited
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
  • Internal LR

Reviews

★★★★★ ★★★★★
4.3/5 Stars out of 6 Reviews
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Verified Buyer
05 dodge 2500 4x4 5.9 24v cummins
5
Very nice product, wish I would have discovered this sooner. Very ingenious product, has made a huge difference in the cooling of my truck. It should really increase the efficiency and overall longevity of the rebuild 5.9L that I just installed. I highly recommend this product. Instructions show that it can be installed with the transmission still in the truck but it was way easier with the transmission removed fyi.
Verified Buyer
Excellent
5
Excellent product, fast shipping, a great company to work with!
Order #1332813
1
The braided hose almost lasted 2 years. Now it’s toast and I’m out of warranty. Definitely would be looking at some quality assurance regarding product quality.
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Answer
The instructions for the Fleece FPE-CLNTBYPS-0305 Coolant Bypass Kit can be found HERE!

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