Transmission Specialties Automatic Transmission Oil Pan

Transmission Specialties Deep Aluminum Transmission Oil Pans

When it comes to protecting and optimizing a high-performance automatic transmission, the oil pan is far more than a simple cover. It is the reservoir that houses automatic transmission fluid (ATF), provides access for routine servicing, and — in upgraded form — adds critical fluid capacity and thermal management that a stock stamped-steel pan simply cannot match. Transmission Specialties brings the same engineering focus that defines their full drivetrain lineup directly to their automatic transmission oil pan offerings.

A Manufacturer Built on Performance Precision

Transmission Specialties has spent over three decades establishing itself as a premier U.S. manufacturer of high-performance automatic transmissions, torque converters, and related drivetrain components. That in-house manufacturing philosophy extends to their transmission oil pans: every pan is designed and produced with the same attention to detail as their legendary XLS-Spragless Torque Converters and Pro-Line Powerglide Transmissions, ensuring that all components work together as a cohesive, performance-engineered system.

Deep Aluminum Pan Lineup: More Capacity, Better Cooling

Transmission Specialties focuses their oil pan catalog on deep aluminum designs, targeting the classic GM performance transmission platforms that dominate the street rod, drag racing, and muscle car markets. Their current lineup includes:

• TH400 Deep Aluminum Pan (TSI4013) — A high-capacity aluminum pan engineered for the legendary Turbo-Hydramatic 400, one of the most widely used automatic transmissions in American performance builds. The added depth increases fluid volume, helping keep ATF temperatures in check under hard use.
• TH350 Deep Aluminum Pan (TSI3510) — Designed for the Turbo-Hydramatic 350, this pan delivers the same extra-capacity benefits for a transmission that remains popular in everything from weekend cruisers to bracket racers.
• Powerglide Deep Aluminum Pan (TSI2553) — Purpose-built for the two-speed Powerglide, a transmission that still rules many drag racing classes. Extra fluid capacity is especially valuable in the high-heat, repeated-pass environment of the strip.

Why Aluminum and Why Deep?

Aluminum construction offers a meaningful weight advantage over cast iron or stamped steel, while also dissipating heat more efficiently — a real benefit for any vehicle subjected to sustained high-load driving. The deep profile increases ATF volume beyond stock specifications, which lowers operating temperatures, extends fluid life, and provides a larger margin of safety during spirited driving or competition use. Unlike a factory pan that simply replaces what wore out, a Transmission Specialties deep aluminum pan is an active upgrade that contributes to transmission longevity and consistent performance.

Fit Within the Transmission Specialties Ecosystem

Because Transmission Specialties manufactures transmissions, torque converters, and internal components under one roof, their oil pans are engineered to complement the rest of their product family. Builders who are already running a Transmission Specialties-built TH350, TH400, or Powerglide will find that adding the matching deep pan keeps everything within a single, well-matched performance ecosystem — simplifying sourcing and ensuring dimensional compatibility.