SKU:MISMMTP-DMAX-01
Mishimoto
Mishimoto Cast Aluminum Transmission Pan - Duramax Allison A1000 | 2015-2019 GMC Sierra 3500HD
Mishimoto Cast Aluminum Transmission Pan - Duramax Allison A1000 | 2015-2019 GMC Sierra 3500HD
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The Mishimoto Cast Aluminum Transmission Pan fits the 2015-2019 GMC Sierra 3500HD 6.6L Duramax with Allison A1000 and adds 6.1 quarts of ATF capacity for cooler, more consistent transmission performance.
Product Overview
This direct-fit cast-aluminum pan replaces the factory stamped-steel pan on the Allison A1000 behind the 6.6L Duramax. Internal baffles reduce fluid sloshing and improve heat dissipation under load.
A precision-machined dovetail groove with an O-ring seal eliminates messy gasket sealants. A magnetic drain plug and 1/8in NPT temperature sensor port make service and monitoring straightforward.
Finished in Gunmetal Gray powder coat with bottom cooling ribs for a clean underside look.
Features & Specifications
- Fits: 2015-2019 GMC Sierra 3500HD 6.6L Duramax with Allison A1000
- Adds 6.1 quarts of ATF capacity over stock pan
- Cast-aluminum construction with Gunmetal Gray powder coat
- Internal baffles reduce sloshing and aid heat dissipation
- Dovetail groove with O-ring seal, no gasket sealant needed
- Pre-installed bolt retainers hold fasteners during install
- Magnetic drain plug captures metal debris
- 1/8in NPT port for transmission temperature sensor
- Backed by Mishimoto Lifetime Warranty
Fitment
This part fits the following vehicles:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2019 | GMC | Sierra 3500 HD | Base |
| 2015-2019 | GMC | Sierra 3500 HD | Denali |
| 2015-2019 | GMC | Sierra 3500 HD | SLE |
| 2015-2019 | GMC | Sierra 3500 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.