The Mishimoto transmission cooler for the 2015-2016 Chevrolet/GMC 6.6L Duramax LML is a direct-fit, stacked-plate upgrade that lowers fluid temperatures for towing, fleet, and daily-driven trucks running the Allison 1000 transmission. Its 13-row core delivers 67% greater core volume and 164% greater fin surface area than the stock cooler, and CNC-machined adapters connect to the factory lines (or AN lines) for leak-free flow with direct-fit brackets, tailor-made hoses, and an air-temp sensor relocation bracket.
| Brand | Mishimoto |
| Type | Direct-fit transmission cooler |
| Core | 13-row stacked-plate |
| Transmission | Allison 1000 |
| vs. Stock | +67% core volume, +164% fin area |
| Fittings | CNC-machined adapters (stock line or AN) |
| Included | Air-temp sensor relocation bracket |
| Warranty | Mishimoto Lifetime Warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2016 | Chevrolet | Silverado 2500 HD | High Country |
| 2015-2016 | Chevrolet | Silverado 2500 HD | LT |
| 2015-2016 | Chevrolet | Silverado 2500 HD | LTZ |
| 2015-2016 | Chevrolet | Silverado 2500 HD | WT |
| 2015-2016 | Chevrolet | Silverado 3500 HD | High Country |
| 2015-2016 | Chevrolet | Silverado 3500 HD | LT |
| 2015-2016 | Chevrolet | Silverado 3500 HD | LTZ |
| 2015-2016 | Chevrolet | Silverado 3500 HD | WT |
| 2015-2016 | GMC | Sierra 2500 HD | Base |
| 2015-2016 | GMC | Sierra 2500 HD | Denali |
| 2015-2016 | GMC | Sierra 2500 HD | SLE |
| 2015-2016 | GMC | Sierra 2500 HD | SLT |
| 2015-2016 | GMC | Sierra 3500 HD | Base |
| 2015-2016 | GMC | Sierra 3500 HD | Denali |
| 2015-2016 | GMC | Sierra 3500 HD | SLE |
| 2015-2016 | GMC | Sierra 3500 HD | SLT |
