SKU: MMTC-DMAX-17SL | UPC: 840197700785
Mishimoto 2017-2019 Chevy GMC 6.6L Duramax L5P Transmission Cooler – Silver
Combat transmission heat in your 2017-2019 Chevrolet Silverado or GMC Sierra 2500 HD 3500 HD with the Mishimoto direct-fit transmission cooler designed for the 6.6L L5P Duramax diesel. This stacked-plate cooler delivers powerful cooling through a 67% increase in core volume to 0.078 gallons and 164% greater fin surface area at 786 square inches compared to stock. CNC-machined adapters brackets and hoses ensure leak-free installation and long-term reliability backed by Mishimoto Lifetime Warranty with Accident Protection.
Key Features
- Stacked-Plate Design: All-aluminum construction provides maximum durability and heat dissipation for demanding towing fleet or performance use
- Increased Core Volume: 67% larger than stock at 0.078 gallons for enhanced fluid capacity and sustained cooling under load
- Expanded Fin Surface Area: 164% more than stock at 786 square inches accelerates heat transfer to keep transmission fluid at optimal temperatures
- CNC-Machined Adapters: Precision fittings connect directly to OEM transmission lines for a secure leak-free setup
- Direct-Fit Components: Custom brackets and hoses enable straightforward bolt-on installation without vehicle modifications
Product Notes
- Requires 6.6L L5P Duramax diesel engine verify fitment before purchase
- Silver powder-coated finish resists corrosion in harsh conditions
- Product weight 10.89 lbs shipping weight 14 lbs
Installation Notes
- Professional installation recommended.
- Bolt-on design completes in 1-2 hours using basic hand tools
- Compatible with stock mounting locations and transmission lines
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | GMC | Sierra 2500 HD | Denali |
| 2017-2019 | GMC | Sierra 2500 HD | SLE |
| 2017-2019 | GMC | Sierra 2500 HD | SLT |
| 2017-2019 | GMC | Sierra 2500 HD | Base |
| 2017-2019 | GMC | Sierra 3500 HD | Denali |
| 2017-2019 | GMC | Sierra 3500 HD | SLE |
| 2017-2019 | GMC | Sierra 3500 HD | SLT |
| 2017-2019 | GMC | Sierra 3500 HD | Base |
Why Choose Mishimoto?
- Lifetime Warranty with Accident Protection covers defects and damage
- Engineered and tested for direct OEM fitment on L5P Duramax platforms
- Proven performance in towing drag strip and daily driving applications
Frequently Asked Questions
- Q: Does this transmission cooler fit 2017-2019 GMC Sierra 2500 HD L5P Duramax?
A: Yes direct-fit for all listed 2017-2019 Chevy Silverado and GMC Sierra 2500 HD 3500 HD models with 6.6L L5P diesel engine - Q: What materials and finish does the cooler use?
A: Full all-aluminum stacked-plate core with durable silver powder-coated finish for corrosion resistance and heat rejection - Q: What warranty coverage is included?
A: Mishimoto Lifetime Warranty with Accident Protection protects against manufacturing defects and accidental damage for the life of the product
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed 21.5 x 13 x 6 inches
- Weight: 10.89 lbs product 14 lbs shipping
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