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Your cart is empty.There’s no greater enemy for a transmission than heat. Whether your 2015-2016 Chevy/GMC 6.6L LML 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 2015-2016 Chevy/GMC 6.6L LML 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 67% greater core volume, and 164% greater fin surface area than the stock 2015-2016 LML 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.
Customer
Reviewed in the United States on March 1, 2025
High quality product. 30-45 minute install time and a significant decrease in transmission operating temperature. Before operating temperatures would be 100 plus degrees above ambient, after I’m only seeing 50-80 degrees above ambient.
Patrick
Reviewed in the United States on August 6, 2023
Worked out great for my 15 LML. It keeps the transmission cool in these hot ass Arizona summers.
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