Pacific Performance Engineering 128052020 Standard-Depth Cast Aluminum Transmission Pan GM Allison 1000 & 2000 Series Black

The PPE 128052020 Standard-Depth Cast Aluminum Transmission Pan is a heavy-duty upgrade over the factory stamped-steel pan for GM Allison 1000 and 2000 Series transmissions. Cast from high-grade A356.0-T6 heat-treated aluminum alloy, this pan matches OEM fluid capacity while dramatically improving strength, cooling, and protection. At only 5 inches deep, it is the ideal solution for lowered applications or any build where ground clearance is a priority.

Unlike the thin, stock sheet-metal pan, PPE's standard-depth pan features a thick cast construction with 3/4-inch external cooling fins that significantly increase surface area and reduce operating temperatures. Additional side ribbing further enhances structural rigidity, making it far more resistant to road debris and impact damage than the OEM unit.

Key Features:

• Cast from A356.0-T6 heat-treated aluminum alloy — corrosion-resistant, durable, and thermally efficient
• Standard / low-profile depth (5 inches) — ideal for lowered vehicles and tight-clearance applications
• 3/4-inch external cooling fins for improved heat dissipation over the stock pan
• 1/8-inch and 1/4-inch NPT threaded ports for optional transmission temperature gauge sensors
• Neodymium magnet-equipped 17mm hex head drain plug — captures and holds harmful ferrous metal particles
• Thick cast construction with side ribbing for superior strength and impact resistance
• Zinc-plated Allen head mounting hardware included
• Lifetime warranty
• Black anodized finish (SKU: 128052020)

The PPE Standard-Depth Aluminum Transmission Pan is a direct bolt-on replacement that provides a meaningful upgrade in durability and thermal management without sacrificing clearance. It is also well-suited for hot rod and marine transmission applications. Compatible replacement filter: PPE Standard-Depth Pan Filter (ref. 1280520XX), replacement OEM P/N GM 29542833.