SKU: MMTC-DMAX-11SL | UPC: 811580034107
Mishimoto 11-14 Chevrolet / GMC 6.6L Duramax (LML) Transmission Cooler
Control transmission heat in your 2011-2014 Chevrolet Silverado or GMC Sierra 2500HD 3500HD with the Mishimoto transmission cooler designed for the 6.6L Duramax LML engine. This stacked-plate cooler delivers powerful cooling for tow rigs fleet trucks or drag strip runners keeping fluid temperatures low for longer transmission life. It replaces the stock unit with a direct-fit setup including brackets hoses and adapters for simple installation.
Key Features
- Stacked-Plate Design: Provides maximum heat dissipation and rugged construction to withstand heavy-duty use.
- 41% Greater Core Volume: Larger than stock core allows more fluid capacity for sustained cooling during towing or high-performance driving.
- 73% Greater Fin Surface Area: Increases airflow efficiency to drop transmission temperatures effectively under load.
- CNC-Machined Adapters: Bolt directly to factory transmission lines for secure leak-free connections.
- Direct-Fit Components: Includes custom brackets and hoses for bolt-on installation without modifications.
Product Notes
- Engineered as a direct replacement for stock cooler on Duramax LML transmissions.
- Ideal for vehicles used in towing hauling or performance applications to extend transmission durability.
- Ships securely in protective packaging to prevent damage.
Installation Notes
- Professional installation recommended.
- Bolt-on fit takes about 1-2 hours with basic hand tools.
- Uses factory mounting locations and lines no cutting or drilling required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2014 | Chevrolet | Silverado 2500 HD | LT |
| 2011-2014 | Chevrolet | Silverado 2500 HD | LTZ |
| 2011-2014 | Chevrolet | Silverado 2500 HD | WT |
| 2011-2014 | Chevrolet | Silverado 3500 HD | LT |
| 2011-2014 | Chevrolet | Silverado 3500 HD | LTZ |
| 2011-2014 | Chevrolet | Silverado 3500 HD | WT |
| 2011-2014 | GMC | Sierra 2500 HD | Denali |
| 2011-2014 | GMC | Sierra 2500 HD | SLE |
| 2011-2014 | GMC | Sierra 2500 HD | SLT |
| 2011-2014 | GMC | Sierra 2500 HD | WT |
| 2011-2014 | GMC | Sierra 3500 HD | Denali |
| 2011-2014 | GMC | Sierra 3500 HD | SLE |
| 2011-2014 | GMC | Sierra 3500 HD | SLT |
| 2011-2014 | GMC | Sierra 3500 HD | WT |
Why Choose Mishimoto?
- Performance cooling solutions trusted by diesel enthusiasts for Duramax trucks.
- Heavy-duty aluminum construction built for daily driving and extreme conditions.
- Backed by Lifetime Warranty with Accident Protection for long-term reliability.
Frequently Asked Questions
-
Q: Will this fit my 2012 GMC Sierra 3500HD Denali with LML engine?
A: Yes it fits all listed 2011-2014 Chevy Silverado and GMC Sierra 2500HD 3500HD submodels with 6.6L Duramax LML direct bolt-on. -
Q: What material is the transmission cooler made from?
A: High-quality aluminum with stacked-plate core for optimal strength and heat transfer. -
Q: What does the warranty cover?
A: Lifetime Warranty covers defects and accidents as long as you own the vehicle includes all components.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure custom box 29 x 19 x 4 inches
- Weight: 14.1 lbs
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