Mishimoto MMTC-DMAX-11SL Chevrolet/GMC 6.6L Duramax (LML) Transmission Cooler, 2011-2014
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
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- Ships from Mishimoto
There's no greater enemy for a transmission than heat. Whether your 2011-2014 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 2011-2014 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 41% greater core volume, and 73% greater fin surface area than the stock 2010-2014 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.Key FeaturesDirect fit for all 2011-2014 Chevrolet/GMC 6.6L Duramax (LML)Stacked-plate construction for maximum durability and superior coolingCNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines41% greater core volume than stock cooler73% greater external fin surface area over stock coolerPatent #D900,161Mishimoto Lifetime WarrantyPurchase IncludesMishimoto Stacked Plate Transmission CoolerCNC-Machined Quick-Disconnect to Hose Barb AdaptersStock-style Quick-Disconnect FittingsTransmission HosesMounting BracketsWorm Gear ClampsZip TieMounting HardwareMishimoto Lifetime WarrantySpecificationsRows13Core Length (in)27.95Core Height (in)5.78Core Thickness (in)1.25Engine Codes6.6L Duramax LMLChassis CodesLMLNoteDoes not fit K2 chassis vehicles
There's no greater enemy for a transmission than heat. Whether your 2011-2014 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 2011-2014 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 41% greater core volume, and 73% greater fin surface area than the stock 2010-2014 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.Key FeaturesDirect fit for all 2011-2014 Chevrolet/GMC 6.6L Duramax (LML)Stacked-plate construction for maximum durability and superior coolingCNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines41% greater core volume than stock cooler73% greater external fin surface area over stock coolerPatent #D900,161Mishimoto Lifetime WarrantyPurchase IncludesMishimoto Stacked Plate Transmission CoolerCNC-Machined Quick-Disconnect to Hose Barb AdaptersStock-style Quick-Disconnect FittingsTransmission HosesMounting BracketsWorm Gear ClampsZip TieMounting HardwareMishimoto Lifetime WarrantySpecificationsRows13Core Length (in)27.95Core Height (in)5.78Core Thickness (in)1.25Engine Codes6.6L Duramax LMLChassis CodesLMLNoteDoes not fit K2 chassis vehicles
HSP offers a limited lifetime warranty to the original purchaser on eligible HSP products. Underhood powder coating has separate two-year limited coverage. Non-HSP brands follow their own manufacturer warranties. Discontinued products and customer/installer damage are excluded. Claim authorization is required; customer pays inbound shipping for ordinary claims.
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
HSP Diesel warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
- Return eligibility
- HSP states returns must be postmarked within 30 days of purchase, new and unused with original tags and packaging, with an approved RMA. A 15% restocking fee and customer-paid return shipping apply. Special orders, non-HSP dropship products, apparel, used items and custom colors are excluded. Based on what HSP Diesel offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- HSP Diesel
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- HSP Diesel
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.