TH350 Deep Aluminum Pan

The TH350 Deep Aluminum Pan from Transmission Specialties is purpose-built for enthusiasts and mechanics who demand superior transmission cooling and extended fluid capacity. If you're running a TH350 transmission in a street rod, performance truck, or classic muscle car, this pan upgrades your factory steel setup with a deep-sump aluminum design that increases fluid volume and surface area for heat dissipation. Whether you're building a high-horsepower engine or simply want better thermal management during extended driving, this pan replaces the stock component while maintaining full compatibility with your existing transmission.

Constructed from lightweight aluminum, the TH350 Deep Aluminum Pan reduces unsprung weight compared to cast iron or steel alternatives while providing superior heat rejection—critical for sustained performance driving where transmission fluid temperature directly impacts converter efficiency and clutch band longevity. The deep pan design increases fluid capacity, allowing the torque converter and cooler lines to retain more fluid volume, which helps maintain stable viscosity and extends drain intervals under load. The finned interior geometry maximizes cooling surface area, and the aluminum construction won't corrode or degrade like traditional steel pans exposed to road salt and moisture.

This pan is ideal for street performance applications, towing setups, and any build where transmission longevity and thermal stability are priorities. Installation is straightforward—it bolts directly to your TH350 transmission with no modifications to the case or mounting surfaces required. Fits all TH350 equipped vehicles without adapter plates or fitment issues. Pair it with quality ATF and routine maintenance to maximize transmission life in high-heat environments.