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UnderDog Diesel

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Coolant Bypass Kits

Showing 1-29 of 29 products

ATS Diesel ATS 4R100 Transmission Cooler Bypass Delete Fits 1999-2003 7.3L Power Stroke - 310-902-3224

Coolant Bypass Kits

ATS Diesel ATS 4R100 Transmission Cooler Bypass Delete Fits 1999-2003 7.3L Power Stroke - 310-902-3224

$50.00

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ATS Diesel ATS Thermal Bypass Valve Up-Grade Fits 2013-2018 6.7L Cummins W/ Billet Filter Coupler - 310-005-2392

Coolant Bypass Kits

ATS Diesel ATS Thermal Bypass Valve Up-Grade Fits 2013-2018 6.7L Cummins W/ Billet Filter Coupler - 310-005-2392

$94.74

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Fleece Performance 12V Coolant Bypass Kit 1994-1998 - FPE-CLNTBYPS-CUMMINS-12V

Coolant Bypass Kits

Fleece Performance 12V Coolant Bypass Kit 1994-1998 - FPE-CLNTBYPS-CUMMINS-12V

$379.00

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Fleece Performance 2003-2018 Cummins Coolant Bypass Hose Brackets set of 2 - FPE-CLNT-HS-BRKT

Coolant Bypass Kits

Fleece Performance 2003-2018 Cummins Coolant Bypass Hose Brackets set of 2 - FPE-CLNT-HS-BRKT

$69.99

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Fleece Performance 34.5 Inch Common Rail/VP44 Cummins Coolant Bypass Hose Black Nylon Braided - FPE-CLNTBYPS-HS-CRVP-BLK

Coolant Bypass Kits

Fleece Performance 34.5 Inch Common Rail/VP44 Cummins Coolant Bypass Hose Black Nylon Braided - FPE-CLNTBYPS-HS-CRVP-BLK

$75.76

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Fleece Performance 34.5 Inch Common Rail/VP44 Cummins Coolant Bypass Hose Stainless Steel Braided - FPE-CLNTBYPS-HS-CRVP-SS

Coolant Bypass Kits

Fleece Performance 34.5 Inch Common Rail/VP44 Cummins Coolant Bypass Hose Stainless Steel Braided - FPE-CLNTBYPS-HS-CRVP-SS

$75.76

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Fleece Performance 39.50 Inch 12 Valve Cummins Coolant Bypass Hose Black Nylon Braided - FPE-CLNTBYPS-HS-12V-BLK

Coolant Bypass Kits

Fleece Performance 39.50 Inch 12 Valve Cummins Coolant Bypass Hose Black Nylon Braided - FPE-CLNTBYPS-HS-12V-BLK

$84.31

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Fleece Performance 39.50 Inch 12 Valve Cummins Coolant Bypass Hose Stainless Steel Braided - FPE-CLNTBYPS-HS-12V-SS

Coolant Bypass Kits

Fleece Performance 39.50 Inch 12 Valve Cummins Coolant Bypass Hose Stainless Steel Braided - FPE-CLNTBYPS-HS-12V-SS

$84.31

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Fleece Performance 94-18 Dodge 2500/3500 Cummins Coolant Bypass Service Kit - FPE-CLNTBYPS-CUMMINS-SER-KIT

Coolant Bypass Kits

Fleece Performance 94-18 Dodge 2500/3500 Cummins Coolant Bypass Service Kit - FPE-CLNTBYPS-CUMMINS-SER-KIT

$27.99

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Fleece Performance Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-0712

Coolant Bypass Kits

Fleece Performance Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-0712

$399.99

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Fleece Performance Coolant Bypass Kit for 2013-2018 RAM with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-1318

Coolant Bypass Kits

Fleece Performance Coolant Bypass Kit for 2013-2018 RAM with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-1318

$379.99

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Fleece Performance Coolant Bypass Kit for 2019-Present Ram with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-19

Coolant Bypass Kits

Fleece Performance Coolant Bypass Kit for 2019-Present Ram with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-19

$379.99

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Fleece Performance Cummins Coolant Bypass Kit 003-05 Auto Trans with Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-0305-SS

Coolant Bypass Kits

Fleece Performance Cummins Coolant Bypass Kit 003-05 Auto Trans with Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-0305-SS

$379.00

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

Coolant Bypass Kits

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

$379.00

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

Coolant Bypass Kits

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

$379.00

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

Coolant Bypass Kits

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

$379.00

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Fleece Performance Cummins Coolant Bypass Kit 2003-2005 Auto Trans - FPE-CLNTBYPS-CUMMINS-0305

Coolant Bypass Kits

Fleece Performance Cummins Coolant Bypass Kit 2003-2005 Auto Trans - FPE-CLNTBYPS-CUMMINS-0305

$379.00

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Fleece Performance Cummins Coolant Bypass Kit 2003-2007 Manual Transmission - FPE-CLNTBYPS-CUMMINS-MAN

Coolant Bypass Kits

Fleece Performance Cummins Coolant Bypass Kit 2003-2007 Manual Transmission - FPE-CLNTBYPS-CUMMINS-MAN

$379.00

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Fleece Performance Cummins Coolant Bypass Kit 2006-2007 Auto Trans - FPE-CLNTBYPS-CUMMINS-0607

Coolant Bypass Kits

Fleece Performance Cummins Coolant Bypass Kit 2006-2007 Auto Trans - FPE-CLNTBYPS-CUMMINS-0607

$379.00

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

Coolant Bypass Kits

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

$379.00

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Fleece Performance Replacement O-ring Kit for Cummins Coolant Bypass Kits - FPE-CLNTBYPS-CR-ORING-KIT

Coolant Bypass Kits

Fleece Performance Replacement O-ring Kit for Cummins Coolant Bypass Kits - FPE-CLNTBYPS-CR-ORING-KIT

$9.45

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Fleece Performance VP Coolant Bypass Kit 1998.5-2002 - FPE-CLNTBYPS-CUMMINS-VP

Coolant Bypass Kits

Fleece Performance VP Coolant Bypass Kit 1998.5-2002 - FPE-CLNTBYPS-CUMMINS-VP

$379.00

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Wehrli Custom Fabrication 2007.5-2010 LMM Duramax Coolant Bypass/Relocation Fitting - WCF100798

Coolant Bypass Kits

Wehrli Custom Fabrication 2007.5-2010 LMM Duramax Coolant Bypass/Relocation Fitting - WCF100798

$40.74

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XDP Low-Profile Plastic Creeper - XD395

Coolant Bypass Kits

XDP Low-Profile Plastic Creeper - XD395

$99.95

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XDP Oil Cooler 08-10 Ford 6.4L Powerstroke XD270

Coolant Bypass Kits

XDP Oil Cooler 08-10 Ford 6.4L Powerstroke XD270

$159.95

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XDP RAM Transmission Cooler Thermal Bypass Valve (TBV) Upgrade 13-18 Ram - XD343

Coolant Bypass Kits

XDP RAM Transmission Cooler Thermal Bypass Valve (TBV) Upgrade 13-18 Ram - XD343

$99.95

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XDP Transmission Oil Cooler 01-05 GM 6.6L Duramax X-TRA Cool XD309

Coolant Bypass Kits

XDP Transmission Oil Cooler 01-05 GM 6.6L Duramax X-TRA Cool XD309

$235.95

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XDP Transmission Oil Cooler 06-10 GM 6.6L Duramax X-TRA Cool XD310

Coolant Bypass Kits

XDP Transmission Oil Cooler 06-10 GM 6.6L Duramax X-TRA Cool XD310

$258.95

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XDP X-TRA Cool Transmission Oil Cooler With Fan - XD398

Coolant Bypass Kits

XDP X-TRA Cool Transmission Oil Cooler With Fan - XD398

$275.95

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