Coolant Bypass Kits

Coolant Bypass Kits

Coolant Bypass Kits

Optimize your engine's performance with our premium selection of coolant bypass kits. Designed for a range of Cummins models, these kits enhance cooling efficiency while providing essential durability and reliability. Whether you're performing an engine swap or upgrading your existing system, our coolant bypass kits ensure optimal temperature management for higher performance.

Why Choose Our Coolant Bypass Kits?

  • High-quality materials and construction for long-lasting performance.
  • Simplifies coolant routing for better engine cooling.
  • Pre-formed hoses and fittings for easier installation in tight spaces.
  • Compatible with various Dodge and RAM Cummins engines from 12V to 6.7L.

We offer a diverse range of products, including:

  • Fleece Performance Universal Pre-Formed 5/8in ID Hose w/ 90 Deg. Ends
  • Fleece Performance 13-16 Dodge 6.7L Cummins 2nd Gen Swap A/C Line Reroute Kit
  • Fleece Performance 03-07 Dodge 5.9L Coolant Bypass Kits with options like stainless steel braided lines
  • Fleece Performance Replacement O-Ring Kits specifically designed for coolant bypass applications

Each coolant bypass kit is engineered to meet the specific needs of your Cummins engine, offering precision fittings and high-quality construction. Discover how these kits can enhance your vehicle's cooling system and ensure optimal performance on and off the road.

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  • User 1

    Fleece Performance 98.5-02 VP Coolant Bypass Kit w/ Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-VP-SS

    Fleece Performance

    $391.26
    Fleece Performance 98.5-02 VP Coolant Bypass Kit w/ Stainless Steel Braided LineInstallation InstructionsThis Part Fits:YearMakeModelSubmodel1998-2002DodgeRam 2500Base1998-2002DodgeRam 3500Base
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • Photo - Primary

    Fleece Performance 98.5-02 Dodge 5.9L Cummins VP Coolant Bypass Kit - FPE-CLNTBYPS-CUMMINS-VP

    Fleece Performance

    $391.26
    Another product from Fleece Performance built out of necessity is the 1998.5-2002 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased...
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • User 1

    Fleece Performance 03-18 Cummins Coolant Bypass Service Kit - FPE-CLNTBYPS-CUMMINS-SER-KIT

    Fleece Performance

    $39.72
    Fleece Performance 03-18 Cummins Coolant Bypass Service KitThis Part Fits:YearMakeModelSubmodel1994-2002DodgeRam 2500Base2003,2005-2010DodgeRam 2500Laramie2003-2010DodgeRam 2500SLT2006-2007DodgeRam 2500Sport2003-2010DodgeRam 2500ST2008-2010DodgeRam...
    $39.72
    Qty in Cart: 0
    Quantity:
    Price:
    $39.72
    Subtotal:
  • User 1

    Fleece Performance 03-07 Manual Transmission Cummins Coolant Bypass Kit w/ SS Braided Line - FPE-CLNTBYPS-CUMMINS-MAN-SS

    Fleece Performance

    $391.26
    Fleece Performance 03-07 Manual Transmission Cummins Coolant Bypass Kit w/ SS Braided LineInstallation InstructionsThis Part Fits:YearMakeModelSubmodel2003,2005-2007DodgeRam 2500Laramie2003-2007DodgeRam 2500SLT2006DodgeRam 2500Sport2003-2007DodgeRam...
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • Photo - Primary

    Fleece Performance 03-07 Dodge 5.9L / 04.5-12 6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans) - FPE-CLNTBYPS-CUMMINS-MAN

    Fleece Performance

    $391.26
    Another product from Fleece Performance built out of necessity is the 2003-2013 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased...
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • User 1

    Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass Kit - FPE-CLNTBYPS-CUMMINS-19

    Fleece Performance

    $413.55
    Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass KitThis Part Fits:YearMakeModelSubmodel2019-2022Ram2500Big Horn2019-2022Ram2500Laramie2019-2021Ram2500Laramie Longhorn2019-2022Ram2500Limited2021-2022Ram2500Limited...
    $413.55
    Qty in Cart: 0
    Quantity:
    Price:
    $413.55
    Subtotal:
  • User 1

    Fleece Performance 13-18 RAM 2500/3500 6.7L Cummins Coolant Bypass Kit - FPE-CLNTBYPS-CUMMINS-1318

    Fleece Performance

    $413.55
    Fleece Performance 13-18 RAM 2500/3500 6.7L Cummins Coolant Bypass KitThis Part Fits:YearMakeModelSubmodel2013-2018Ram2500Big Horn2013-2018Ram2500Laramie2014-2015Ram2500Laramie Limited2013-2018Ram2500Laramie...
    $413.55
    Qty in Cart: 0
    Quantity:
    Price:
    $413.55
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  • User 1

    Fleece Performance 94-98 12V Coolant Bypass Kit w/ Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-12V-SS

    Fleece Performance

    $391.26
    Fleece Performance 94-98 12V Coolant Bypass Kit w/ Stainless Steel Braided LineInstallation InstructionsThis Part Fits:YearMakeModelSubmodel1994-1998DodgeRam 2500Base1994-1998DodgeRam 3500Base
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • Photo - Primary

    Fleece Performance 94-98 Dodge 5.9L Cummins 12V Coolant Bypass Kit - FPE-CLNTBYPS-CUMMINS-12V

    Fleece Performance

    $391.26
    Another product from Fleece Performance built out of necessity is the 1998.5-2002 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased...
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • User 1

    Fleece Performance 07.5-12 Dodge/RAM 2500/3500 6.7L Cummins Coolant Bypass Kit - FPE-CLNTBYPS-CUMMINS-0712

    Fleece Performance

    $434.79
    Fleece Performance 07.5-12 Dodge/RAM 2500/3500 6.7L Cummins Coolant Bypass KitThis Part Fits:YearMakeModelSubmodel2007-2010DodgeRam 2500Laramie2007-2010DodgeRam 2500SLT2007-2010DodgeRam 2500ST2008-2010DodgeRam 2500SXT2010DodgeRam 2500TRX2007-2010DodgeRam...
    $434.79
    Qty in Cart: 0
    Quantity:
    Price:
    $434.79
    Subtotal:
  • User 1

    Fleece Performance 06-07 Auto Trans Cummins Coolant Bypass Kit w/ Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-0607-SS

    Fleece Performance

    $391.26
    Fleece Performance 06-07 Auto Trans Cummins Coolant Bypass Kit w/ Stainless Steel Braided LineInstallation InstructionsThis Part Fits:YearMakeModelSubmodel2006-2007DodgeRam 2500Laramie2006-2007DodgeRam 2500SLT2006-2007DodgeRam 2500Sport2006-2007DodgeRam...
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • User 1

    Fleece Performance 04.5-07 Dodge 5.9L Cummins Coolant Bypass Kit (06-07 Auto Trans) - FPE-CLNTBYPS-CUMMINS-0607

    Fleece Performance

    $391.26
    Another product from Fleece Performance built out of necessity is the 2003-2013 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased...
    $391.26
    Qty in Cart: 0
    Quantity:
    Price:
    $391.26
    Subtotal:
  • Total: items /

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