Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax LB7/LLY Transmission Cooler - MMTC-DMAX-03SLFind parts that fit my vehicle

Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler - MMTC-DMAX-03SL

• Direct-fit transmission cooler for 2003-2005 Chevy/GMC 6.6L Duramax
• Stacked-plate design for maximum durability and cooling
• 174% greater core volume than stock
• 192% greater fin surface area than stock
• CNC-machined adapters for leak-free cooling
• Direct-fit brackets and tailor-made hoses for easy installation
• Backed by Mishimoto Lifetime Warranty with Accident Protection

There's no greater enemy for a transmission than heat. Whether your 2003-2005 Chevy/GMC 6.6L Duramax is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the drag-strip, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct-fit transmission cooler to do just that.

Our 2003-2005 Chevy/GMC 6.6L Duramax transmission cooler utilizes a stacked-plate design for maximum durability and powerful cooling. Aside from its durable construction, this transmission cooler is significantly larger than the stock core. The Mishimoto transmission cooler boasts a 174% greater core volume, and 192% greater fin surface area than the stock 2003-2005 Duramax transmission cooler. The included CNC-machined adapters connect directly to the stock transmission cooler lines for leak-free cooling. Direct-fit brackets and tailor-made hoses make installation easy. Like all Mishimoto products, this transmission cooler is backed up by our Lifetime Warranty with Accident Protection for worry-free cooling as long as you own it.

Cooling products are essential components to keeping your vehicle running at optimal temperatures. Whether you are looking for a radiator, fans, or oil coolers, we've got you covered with the top brands like Mishimoto, Koyorad, Skunk2, Moroso, and more!

Additional Details

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About Mishimoto

Mishimoto, the world leader in performance cooling products, was created for automotive enthusiasts by automotive enthusiasts. Established in 2005, we have more than a decade of experience in working toward our goal of providing superior cooling system upgrades for sport compact, modern muscle, European performance, classics, Jeeps, and trucks.

Vehicle Fitment

• 2003 Chevrolet Silverado 2500 HD Base
• 2003 Chevrolet Silverado 2500 HD LS
• 2003 Chevrolet Silverado 2500 HD LT
• 2003 Chevrolet Silverado 3500 Base
• 2003 Chevrolet Silverado 3500 LS
• 2003 Chevrolet Silverado 3500 LT
• 2003 GMC Sierra 2500 HD Base
• 2003 GMC Sierra 2500 HD SLE
• 2003 GMC Sierra 2500 HD SLT
• 2003 GMC Sierra 2500 HD WT
• 2003 GMC Sierra 3500 Base
• 2003 GMC Sierra 3500 SLE
• 2003 GMC Sierra 3500 SLT
• 2004 Chevrolet Silverado 2500 HD Base
• 2004 Chevrolet Silverado 2500 HD LS
• 2004 Chevrolet Silverado 2500 HD LT
• 2004 Chevrolet Silverado 2500 HD WT
• 2004 Chevrolet Silverado 3500 Base
• 2004 Chevrolet Silverado 3500 LS
• 2004 Chevrolet Silverado 3500 LT
• 2004 Chevrolet Silverado 3500 WT
• 2004 GMC Sierra 2500 HD Base
• 2004 GMC Sierra 2500 HD SLE
• 2004 GMC Sierra 2500 HD SLT
• 2004 GMC Sierra 2500 HD WT
• 2004 GMC Sierra 3500 Base
• 2004 GMC Sierra 3500 SLE
• 2004 GMC Sierra 3500 SLT

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