What does the C6 Corvette tailhousing O-ring do?
The tailhousing o-ring sits between the transmission tailhousing and the rear differential, creating the fluid-tight seal that keeps your drivetrain operating cleanly and correctly. When this o-ring degrades, cracks, or fails — which is increasingly common on higher-mileage Corvettes — you’ll typically notice fluid seeping from the junction between the transmission and differential. Left unaddressed, a leaking tailhousing o-ring can lead to fluid loss, contamination, and ultimately expensive drivetrain damage. It’s a small part with a big job.
Why TDP is your only source for this discontinued GM part
When GM discontinued the C6 Corvette tailhousing O-ring, we made it our mission to keep it available for the Corvette community. Our C6 Corvette tailhousing O-ring is sourced exclusively by Texas Drivetrain Performance and manufactured from the exact same material as the original factory part — so you’re getting OEM-equivalent sealing performance without having to track down a used or improvised substitute. This is not a generic O-ring pulled from a hardware bin. It is a precise, application-specific replacement engineered to fit and seal exactly like the part that came from the factory.
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