Genuine 99639701500 Automatic Transmission Output Shaft Seal

Porsche Transmission Output Shaft Seal

This Genuine automatic transmission output shaft seal is a direct-fit sealing component for select Porsche drivetrains. It is used on the bearing flange side for long shaft applications in Boxster, Cayman, and 911 models.

• Genuine OE replacement seal for the automatic transmission output shaft
• Fits bearing flange side, long shaft applications
• Built for select Porsche Boxster, Cayman, and 911 fitments
• Part number 99639701500 for accurate ordering and service matching

Fitment Details

• Fits 1997-2008 Porsche Boxster, N/A, bearing flange side; for long shaft
• Fits 2006-2008 Porsche Cayman, N/A, bearing flange side; for long shaft
• Fits 1999-2001 Porsche 911, N/A, bearing flange side; for long shaft

What This Seal Helps Address

• Transmission fluid seepage at the output shaft area
• Leakage around the bearing flange side of the transmission
• Seal wear from age, heat, and drivetrain movement
• Service replacement for long shaft automatic transmission applications

Installation Notes

Verify the transmission configuration before installation, including long shaft application and bearing flange side placement. Inspect the shaft surface and sealing bore for wear or damage, and replace the seal only after the area is clean and free of debris. Confirm part number 99639701500 against the vehicle’s transmission specification before service.

Quality Assurance

Genuine parts are built to OE specifications for the listed Porsche applications, supporting accurate fitment and service consistency. This part cross-references no additional part numbers in the provided data.