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Mishimoto 03-05 Chevrolet - GMC 6-6L Duramax LB7-LLY Transmission Cooler

Mishimoto SKU MMTC-DMAX-03SL 25 in stock
Ready for checkout Secure this part for your build
Availability: 25 in stock
SKU: MMTC-DMAX-03SL
Manufacturer: Mishimoto
Old price: $549.00
$498.95

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 it's 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.

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

Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler, 2003-2005

Automatic Transmission Oil Cooler

Mishimoto MMTC-DMAX-03SL

Auto Tran Oil Cooler

45 confirmed fitments Showing up to 45 vehicles from our fitment database.
2003 14 fitments
Chevrolet Silverado 2500 HD Base
Chevrolet Silverado 2500 HD LS
Chevrolet Silverado 2500 HD LT
Chevrolet Silverado 2500 HD WT
Chevrolet Silverado 3500 Base
Chevrolet Silverado 3500 LS
Chevrolet Silverado 3500 LT
GMC Sierra 2500 HD Base
GMC Sierra 2500 HD SLE
GMC Sierra 2500 HD SLT
GMC Sierra 2500 HD WT
GMC Sierra 3500 Base
GMC Sierra 3500 SLE
GMC Sierra 3500 SLT
2004 16 fitments
Chevrolet Silverado 2500 HD Base
Chevrolet Silverado 2500 HD LS
Chevrolet Silverado 2500 HD LT
Chevrolet Silverado 2500 HD WT
Chevrolet Silverado 3500 Base
Chevrolet Silverado 3500 LS
Chevrolet Silverado 3500 LT
Chevrolet Silverado 3500 WT
GMC Sierra 2500 HD Base
GMC Sierra 2500 HD SLE
GMC Sierra 2500 HD SLT
GMC Sierra 2500 HD WT
GMC Sierra 3500 Base
GMC Sierra 3500 SLE
GMC Sierra 3500 SLT
GMC Sierra 3500 WT
2005 15 fitments
Chevrolet Silverado 2500 HD Base
Chevrolet Silverado 2500 HD LS
Chevrolet Silverado 2500 HD LT
Chevrolet Silverado 2500 HD WT
Chevrolet Silverado 3500 Base
Chevrolet Silverado 3500 LS
Chevrolet Silverado 3500 LT
GMC Sierra 2500 HD Base
GMC Sierra 2500 HD SLE
GMC Sierra 2500 HD SLT
GMC Sierra 2500 HD WT
GMC Sierra 3500 Base
GMC Sierra 3500 SLE
GMC Sierra 3500 SLT
GMC Sierra 3500 WT
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