SKU:MISMMTP-DMAX-01
Mishimoto
Mishimoto Cast Aluminum Transmission Pan - Duramax Allison A1000 | 2015-2019 GMC Sierra 2500HD
Mishimoto Cast Aluminum Transmission Pan - Duramax Allison A1000 | 2015-2019 GMC Sierra 2500HD
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The Mishimoto Cast Aluminum Allison 1000 Transmission Pan fits the 2015-2019 GMC Sierra 2500HD 6.6L Duramax and adds 6.1 quarts of ATF capacity for improved cooling and transmission longevity.
Product Overview
This direct-fit replacement pan is cast from aluminum and finished in Gunmetal Gray powder coat. Internal baffles reduce fluid sloshing and improve heat dissipation under load.
A precision-machined dovetail groove with O-ring seal replaces the factory flat gasket, eliminating messy sealants. Pre-installed bolt retainers hold fasteners in place during install.
A magnetic drain plug catches metallic debris, and a 1/8in NPT port lets you add a transmission temperature sensor for monitoring on your Duramax.
Features & Specifications
- Fits: 2015-2019 GMC Sierra 2500HD 6.6L Duramax
- Adds 6.1 quarts of ATF capacity over stock
- Cast aluminum construction, Gunmetal Gray powder coat
- Internal baffles reduce sloshing and improve cooling
- Dovetail groove with O-ring seal, no flat gasket needed
- Pre-installed bolt retainers simplify installation
- Magnetic drain plug catches metallic debris
- 1/8in NPT port for transmission temp sensor
- Backed by Mishimoto Lifetime Warranty
Fitment
This part fits the following vehicles:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2019 | GMC | Sierra 2500 HD | Base |
| 2015-2019 | GMC | Sierra 2500 HD | Denali |
| 2015-2019 | GMC | Sierra 2500 HD | SLE |
| 2015-2019 | GMC | Sierra 2500 HD | SLT |
Shipping & Returns
Shipping & Returns
Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.
Warranty
Warranty
All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.
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Free shipping over $250
Shipping policyFree shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.
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30-day returns
Return policyReturns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.