Transmission Coolers & Line Kits

Mishimoto's New Transmission Cooler Line Kit for your 2001-2005 GMC/Duramax LB7/LLY the high-strength nylon outer braid avoids expansion under extreme pressure and prevents abrasion

The transmission mated to your 2006-2010 LLY/LBZ/LMM Duramax is essential to everything your truck does, and keeping it cool is crucial.. Mishimoto's cooler line kit completely replaces the OEM lines with 2,000 psi rated industrial hydraulic lines.

Mishimoto's new 37-row stacked-plate transmission cooler provides a larger surface area increases core volume by 265% compared to the stock 9-row transmission cooler in 1999-2003 Ford Powerstroke 7.3L diesel trucks. Designed as a direct, drop-in replacement, this unit increases fluid capacity by 1qt and has a proven 10°C temperature drop.

Mishimoto's new 37-row stacked-plate transmission cooler provides a larger surface area increases core volume by 21% compared to the stock 31-row transmission cooler in 2003-2007 Ford Powerstroke 6.0L diesel trucks. Designed as a direct, drop-in replacement, this unit increases fluid capacity by 1/3 qt and has a proven 10°C temperature drop.

2008-2010 Ford 6.4L Powerstroke - Mishimoto's new 17-row stacked-plate transmission cooler provides a 121% larger surface area over stock and increases core volume by 63% to keep your 5R110W nice and cool.

All new for the 1994-2002 Dodge RAM! Control your transmission temperatures and tow with confidence with the latest improvement for your Dodge Ram from Fleece Performance.

All new for the 2003-2007 Dodge RAM! Control your transmission temperatures and tow with confidence with the latest improvement for your Dodge Ram from Fleece Performance.

All new for the 2007.5-2009 Dodge RAM! Control your transmission temperatures and tow with confidence with the latest improvement for your Dodge Ram from Fleece Performance.

Need a new Dodge transmission cooler? Good luck getting an OEM replacement - they're discontinued. Mishimoto developed a much more reliable and durable transmission cooler for your 1994-2002 Dodge Cummins 5.9L.

Mishimoto's new HD transmission cooler for your 2003-2009 Dodge Cummins 5.9/6.7L diesel increases core volume by 212%, fluid capacity by 244%, and features a fully servicable thermostat for fast warm-up in cold climates and a bypass for hot climates.

Mishimoto's New Transmission Cooler for your 2015-2018 Dodge Ram 6.7L Cummins diesel, increases core volume by 112%, fluid capacity by 226%, and Internal fins distribute fluid throughout the tube for more efficient cooling

The Mishimoto MMTC-RAM-03TQ Replacement Transmission Cooler is a direct fit replacement for the leaking cooler in your 2003-2007 Dodge Ram 5.9L Diesel. The stock transmission oil cooler on your truck is a liquid-to-liquid cooling component, using the engine’s coolant to cool the transmission fluid.

Mishimoto's New Transmission Cooler for your 2011-2016 Ford Powerstroke 6.7L diesel combines the power of air & liquid cooling with the integration of this new kit into the stock system.

Mishimoto's New Transmission Cooler for your 2017-2019Ford Powerstroke 6.7L diesel combines the power of air & liquid cooling with the integration of this new kit into the stock system.

Mishimoto's new transmission cooler for your 2001-2003 GMC/Duramax LB7 has 174% greater core volume and 192% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

Mishimoto's new transmission cooler for your 2003.5-2005 GMC/Duramax LB7/LLY has 174% greater core volume and 192% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

Mishimoto's new transmission cooler for your 2006-2010 GMC/Duramax LBZ/LMM has 84% greater core volume and 125% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

Mishimoto's new transmission cooler for your 2011-2014 GMC/Duramax LML has 41% greater core volume and 73% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

Mishimoto's new transmission cooler for your 2015-2016 GMC/Duramax LML has 67% greater core volume and 164% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

Mishimoto's new transmission cooler for your 2017-2019 GMC/Duramax L5P has 67% greater core volume and 164% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

1999-2003 Ford Powerstroke 7.3L w/ 3/8” Cooler Lines - BD Coolers provide 22% more cooling over other designs. The 200 Micro Extruded passages provide a large surface area to transfer heat for external air flow cooling while turbulent oil flow design promotes a more complete cooling.

1994-2016 Dodge Cummins & 2003-2016 Ford Powerstroke w/ 1/2" Cooler Lines - BD's Double stacked cores deliver over 40,000 BTU/HR of cooling and over 350% temperature drop versus the factory system.

2001-2016 GM 6.6L Duramax LB7 LLY LBZ LMM LML w/ 5/8" Cooler Lines - BD's Double stacked cores deliver over 40,000 BTU/HR of cooling and over 350% temperature drop versus the factory system.

1994-2016 Dodge Cummins & 2003-2016 Ford Powerstroke w/ 1/2" Cooler Lines - BD Coolers provide 22% more cooling over other designs. The 200 Micro Extruded passages provide a large surface area to transfer heat for external air flow cooling while turbulent oil flow design promotes a more complete cooling.

Dorman's Exhaust Manifold Kit is a direct replacement upgrade and provide better performance for your 2003-2007 Ford 6.0L Powerstroke truck.

Dorman's Transmission Cooler Line (Outlet Tube to Trans) is designed with robust construction that can resist corrosion damage and offer superior performance for your 1994-2002 Dodge 5.9L Cummins truck.

The Dorman 624-991 Transmission Oil Cooler Line (Inlet To Transmission) is a direct replacement for your 1998.5-2002 Dodge 5.9L Diesel.

This unit is a quality high value fan that uses and advanced curved fan blade for higher performance and quieter operation. Perfect for any automotive application. Can be used for radiators or any other auxiliary cooling operation where air flow is essential.

This transmission cooler comes with an 8" electric fan that is perfect for heavy-duty trucks and supercharged or turbocharged applications. This cooler will ensure that transmission temperatures remain low to keep your vehicle performing at its best.

2001-2016 GM 6.6L Duramax LB7 LLY LBZ LMM LML w/ 5/8” Cooler Lines - BD Coolers provide 22% more cooling over other designs. The 200 Micro Extruded passages provide a large surface area to transfer heat for external air flow cooling while turbulent oil flow design promotes a more complete cooling.

2013-2018 Dodge Cummins 6.7L - XDP's Thermal Bypass Valve Upgrade utilizes an unrestricted straight through design, eliminating the recirculation aspect of the factory TBV. No more having to worry about when the factory part will fail you.

2010-2012 Dodge Cummins 6.7L - Fix your leaking transmission lines with these heavy duty, high flow, flexible transmission lines. This kit comes complete with everything needed to get the job done right the first time.

Replacement O-ring kit for Fleece Performance Duramax Oil Cooler Adapter, FPE-DMAX-OCADPT.

Replacement Transmission Cooler Line (longest length line) for the Fleece Performance Allison Transmission Cooler Line Kits FPE-TL-LB7-LLY and FPE-TL-LBZ-LMM. For use on model year 2001-2010 LB7, LLY, LBZ, and LMM trucks.

Replacement Transmission Cooler Line (medium length line) for the Fleece Performance Allison Transmission Cooler Line Kits FPE-TL-LB7-LLY and FPE-TL-LBZ-LMM. For use on model year 2001-2010 LB7, LLY, LBZ, and LMM trucks.

Replacement Transmission Cooler Line (short line) for the Fleece Performance Allison Transmission Cooler Line Kit (FPE-TL-LB7-LLY). For use on model year 2001-2005 LB7-LLY trucks.

Replacement Transmission Cooler Line (short line) for the Fleece Performance Allison Transmission Cooler Line Kit FPE-TL-LBZ-LMM. For use on model year 2006-2010 LBZ and LMM trucks.

2001-2005 GM/Chevy 6.6LC/Duramax LB7/LLY 6.6L - Fix your leaking transmission lines with these heavy duty, high flow, flexible transmission lines. This kit comes complete with everything needed to get the job done right the first time.

2006-2010 GM/Chevy 6.6LC/Duramax LBZ/LMM 6.6L - Fix your leaking transmission lines with these heavy duty, high flow, flexible transmission lines. This kit comes complete with everything needed to get the job done right the first time.

2019-2024 Dodge Cummins 6.7L 2500-5500 w/ 68RFE/Aisin Trans - Debris in the stock cooler bypass valve can cause it to jam the internal valve keeping it in re-circulation mode. The BD Cooler Bypass Delete keeps the transmission cooler operational all the time and eliminates this failure prone item.