Speed Stop Auto Repair / Masonbilt Diesel Performance Duramax 5/8 Transmission Cooler Line Kit 01-16 GM with Fluidyne Transmission Cooler

The only Duramax cooler and line package deal on the market, with a LIFETIME WARRANTY, and the best components that money can buy. 

Transmission Line Set:

Masonbilt Performance X Speed Stop Auto Repair has teamed up to create the most durable, serviceable, and the ONLY DOT-approved transmission line set with a LIFETIME warranty. All of these lines are made by hand in-house with our own equipment, giving us complete control over quality and ensuring each line is made to our exact specifications. 

Includes:

-Complete 3-piece replacement line set and all necessary fittings for the truck side, zip ties, and an extra o-ring. -Instructions

-Lifetime Warranty 

-Real customer service you can call or text!

Features:

-5/8" flame and abrasion-resistant hose rated for 4000psi- SIGNIFICANTLY more than both OEM and built transmissions require

-Stainless JIC ORB fittings- no aluminum to corrode or crack

-Our own specific line lengths and fittings tailored specifically to each truck

Fitment notes: Please see pictures if you have additional questions:

-If you have an aftermarket radiator, you will need M22 fittings instead of OE-style to JIC. This can be easily determined if your radiator has a hex-shaped fitting BEHIND the OE-style transmission cooler fittings.

2001-2002 Allison transmission cooler inlet/outlet fittings had a smaller 3/4" thread diameter than later 7/8" units. If you think your transmission has been swapped with a later unit, you can measure the original trans cooler fitting in the transmission or refer to the build plate on the passenger side of the transmission. If you need help identifying your fittings, please contact us!

Transmission Cooler:

Fluidyne Heavy Duty Bar and Plate Transmission Cooler

Excessive heat is a major threat to your transmission’s longevity, leading to premature wear, reduced performance, and costly repairs. OEM transmission coolers often struggle to dissipate heat adequately, especially under demanding conditions, leaving your transmission vulnerable. Upgrading to a more efficient cooling solution is essential for protecting your transmission and enhancing its durability.

The Fluidyne High Performance Bar and Plate Transmission Fluid Cooler is designed specifically for the GM 6.6L Duramax platform and offers a significant upgrade over stock coolers. With four times the heat dissipation capacity of factory models, this cooler ensures that your transmission runs cooler and more efficiently, even in the most demanding situations.

Engineered with the densest fins per inch on the market, the Fluidyne cooler delivers exceptional cooling performance. Its fully welded internal splitter plates prevent contamination between hot and cold fluids, maintaining the integrity and effectiveness of your transmission fluid. Constructed from aerospace-grade aluminum using bar-and-plate technology, this cooler delivers maximum heat exchange with minimal pressure drop.

Designed as a direct bolt-in replacement, the Fluidyne cooler uses your existing factory mounts for a straightforward installation. Finished with a proprietary heat-wicking powder coat, it further enhances thermal efficiency. Backed by a limited lifetime warranty, the Fluidyne High Performance Cooler ensures long-lasting reliability and superior performance for your vehicle.

Key Features:

• Four times the heat dissipation capacity compared to stock coolers
• Direct bolt-in replacement for easy installation
• Maximum fin density for superior cooling
• Fully welded internal splitter plates to prevent fluid contamination
• Tested up to 250 PSI against leaks and ensure optimal performance. 
• Aerospace-grade aluminum construction with bar and plate design
• Proprietary fin design for enhanced thermal performance
• Powder-coated with a specialized heat-wicking compound
• Limited lifetime warranty for added peace of mind

10% off both items with this package deal, compared to purchasing them separately!