PPE 10L80 Transmission Pan Gasket 20-26 GM 3.0L Duramax 1500

Is your 10L80 starting to weep, shift inconsistently, or just due for a proper service? The PPE Transmission Pan Gasket is a simple but critical upgrade every GM owner should take seriously when dropping the pan. This is the sealing surface that stands between clean, pressurized transmission fluid and a costly leak that can turn into overheating, slipping, or long-term internal wear. Whether you’re servicing a daily driver or a tuned truck that sees heavy loads and highway pulls, this gasket ensures your transmission pan goes back on tight, clean, and leak-free so you can get back on the road with confidence.

Engineered as a direct-fit replacement for GM 10L80 applications, this PPE gasket seals both factory and PPE transmission pans without guesswork or trimming. It’s built to handle the constant heat cycles, pressure fluctuations, and fluid exposure that come with modern 10-speed automatics, maintaining a reliable seal even under demanding towing and performance conditions.