Pol Alum TH400 Trans Pan

The Polished Aluminum TH400 Transmission Pan from TRANS-DAPT is a premium upgrade designed for serious hot rodders, drag racers, and street machine builders who demand both performance and visual impact. This transmission pan replaces the factory cast-iron pan, offering a significant weight reduction while adding underhood eye appeal that reflects your commitment to quality. The TH400 is legendary for durability and power handling, and this polished aluminum pan maximizes that reputation by improving cooling efficiency and reducing unsprung weight—critical factors in high-performance applications where every pound matters.

Crafted from lightweight aluminum alloy, the Polished Aluminum TH400 Transmission Pan increases surface area relative to the factory design, allowing fluid to dissipate heat more effectively during sustained acceleration or track duty. The polished finish isn't merely cosmetic—it reflects radiant heat away from the transmission fluid, keeping temperatures lower during demanding driving conditions. At 6.6 pounds, this pan shaves meaningful weight compared to cast iron equivalents, improving weight distribution and reducing rotational inertia. The precision-engineered fitment ensures a leak-free seal with OEM gasket surfaces while accommodating standard drain plugs and dipstick routing.

This pan is ideal for TH400-equipped vehicles running higher stall converters, elevated boost levels, or frequent wide-open-throttle scenarios where transmission fluid temps exceed factory specifications. Street rods, muscle cars, trucks, and racing platforms all benefit from improved cooling and reduced mass. Installation is straightforward for any mechanic familiar with transmission service—simply drain fluid, remove the factory pan, and bolt on the new aluminum design using existing hardware. Compatibility is confirmed with all standard TH400 transmissions across vintage hot rods, classic muscle cars, and modern swaps where the legendary three-speed remains the power choice.