FREE 1 to 3-Day Delivery on Orders $149+ Details

$12K Summer Sweepstakes! Enter Now >

Find for your Ram 3500

Coolant Bypass Kit (03-05 5.9L RAM 3500)Find parts that fit my vehicle

Item SHR54057
Our Price

$514.99

Military, Medical & First Responders $25.75 Available in AT Cash Rewards.
Confirm Eligibility

CONFIRM THIS FITS YOUR VEHICLE!

Select a different vehicle Help?
Update or Change Vehicle
Add to Cart
Save for later
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Shop Owners Save More! Sign up for our dealer program
    Join For FREE

      Product Information

      Features, Description, Q&A

      Features

        _x000D_
      • Increased Coolant Flow, Decreased Coolant Temperatures
        • _x000D_
      • The Rear Cylinders On The 5.9/6.7L Cummins Suffer From A Lack Of Coolant Flow, And Therefore, Experience The Highest Coolant Temperatures
        • _x000D_
      • This Can Cause Excessive Pressure To Build In The Cooling System, Especially At The Rear Of The Block And Blow Out Freeze Plugs Externally, Or The Smaller Diameter Plugs Under The Valve Cover, Leading To Failure
        • _x000D_
      • Secondary Thermostat Works Based On Temperature Instead Of Excessive Pressure
        • _x000D_
      • Ensures Consistent Temperatures Across All Six Cylinders
        • _x000D_
      • Lowers Coolant Temperature At The Rear Cylinders
        • _x000D_
      • Prevents Damaging Coolant Pressure Build Up
        • _x000D_
      • Complete Kit Comes With Braided Hose And AN O-ring Fittings To Ensure Leak-Free Installation
        • _x000D_
      • Kits Include Billet Hose Brackets For Model Years 2003+
        • _x000D_
      • Eliminates Factory Transmission Fluid Heat Exchanger For 2003 - 2007 5.9L Automatic Transmission Versions
        • _x000D_
      • Heat Exchanger Designed For Use In Cold Climates To Warm Transmission Fluid With Engine Coolant
        • _x000D_
      • Warranty Covers 1 Year Limited Parts
        • _x000D_
      • Fits 03-05 5.9L RAM 3500
        • _x000D_

      Description

      Enhanced Cooling Performance. The Coolant Bypass Kit improves coolant flow and lowers coolant temperatures in critical engine areas by using a secondary thermostat that regulates temperature evenly. This prevents excessive pressure buildup and minimizes the risk of freeze plug failure, helping to maintain engine durability under heavy use.

      _x000D__x000D_

      Construction and Appearance. The kit features a stainless steel braided coolant line paired with AN O-ring fittings for a secure, leak-free installation. Billet hose brackets are included for model year 2003 and later models, providing sturdy, professional-quality mounting hardware.

      _x000D__x000D_

      Installation. Installation is straightforward with no drilling required, suitable for experienced enthusiasts and professionals alike. The kit replaces the factory transmission fluid heat exchanger in applicable models, simplifying the cooling system layout.

      _x000D__x000D_

      Warranty. This product includes a one-year limited parts warranty for reliability and quality assurance.

      _x000D__x000D_

      Application. Specifically designed for the 2003-2005 5.9L RAM 3500 equipped with an automatic transmission, this coolant bypass kit addresses known cooling challenges unique to this platform.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Questions & Answers

      No questions about this product yet. Ask the First Question

      Will It Fit My Ram 3500

      • 5.9L I6 - 03, 04, 05