PPE Deep Transmission Pan - GM GM Allison 1000 and 2000 Series 1000 and 2000 Series - Brushed

Upgrade from the stock stamped-steel transmission pan to the PPE Heavy-Duty Cast Aluminum Deep Transmission Pan for complete drainage, improved durability, enhanced cooling, and superior transmission protection. The stock fluid pan has limited capacity, providing little thermal buffering, and its thin sheet metal construction lacks the strength needed for road debris/obstacles. In addition, the stock drain nut protrudes above the bottom of the transmission pan, trapping over 1 quart of old fluid. This retained fluid, filled with metal shavings, mixes with the fresh fluid immediately, accelerating wear on transmission components. Excessive heat kills transmission life. As temperatures rise, transmission fluid viscosity decreases, weakening the lubricating film that protects gears and bearings. This could cause premature wear and potential failure. The external cooling fins remain flush with the stock skid plate. This design maximizes the effect of underbody airflow for superior cooling and heat dissipation, while ensuring smooth airflow, reducing flow separation or turbulence. The PPE Transmission Pan has deep external cooling fins, resulting in a 2.24X larger external surface area. The PPE Deep Transmission Pan increases the transmission fluid capacity by industry-leading 4.3 quarts. Higher transmission fluid capacity means higher thermal stamina and less chance of overheating (because it takes longer to heat up a larger volume of fluid). It also dilutes the contaminants in the system, prevents sludge formation, reduces wear, and extends transmission life. Internal baffles are purposely laid out diagonally. Together with the longitudinal external fins, they form a stiff, cross-bracing structure, distributing loads better and increasing rigidity and structural integrity. Manufactured using permanent mold casting with A356.0-T6 heat-treated aluminum for better dimensional accuracy, smoother surface finish, reduced porosity, and higher strength. Shot peened to harden the surface, improve fatigue strength, and relieve internal stress. Includes a large, 304 stainless-steel drain plug with a powerful high-temperature rated neodymium magnet to pull ferrous metal shavings out of the fluid. The drain plug is recessed and protected by deep external fins.