National 222535 Manual Transmission Input Shaft Seal - Front

Manual Transmission Input Shaft Seal for Metric Applications

National 222535 is a manual transmission input shaft seal built for metric applications that require a precise sealing fit. It uses nitrile sealing material and measures 0.984 in. inside diameter, 1.505 in. outside diameter, and 0.276 in. width for a compact, OE-style seal profile.

National has supplied sealing solutions for decades, and this oil seal is part of the 220000 series. The part number 222535 is used across a wide range of manual transmission applications, including Toyota Corolla, Suzuki Samurai, and Audi 80 fitments with the correct transmission.

• Part type: manual transmission input shaft seal
• Brand: National
• Part number: 222535
• Sealing material: nitrile
• Metric dimensions for accurate housing and shaft fit
• Outside diameter: 1.505 in. / 38.230 mm
• Inside diameter: 0.984 in. / 25.000 mm
• Width: 0.276 in. / 7.000 mm
• Series: 220000
• Part description: oil seal

Fitment and Application Details

This seal is used in manual transmission service where the input shaft area needs a reliable oil barrier. It is listed for vehicles such as 1971-1987 Toyota Corolla with Toyota T50 transmission, 1986-1995 Suzuki Samurai with Suzuki MM5 transmission, and 1988-1992 Audi 80 with Audi 089 transmission. National 222535 also appears in applications for Chevrolet Tracker, Suzuki Sidekick, and Toyota Corona when the specified transmission is present.

This part cross-references Bosch 66835 for the same application.

What It Helps Address

• Transmission fluid seepage at the input shaft
• Oil leakage around the manual transmission housing bore
• Seal wear from age, heat, and normal drivetrain use
• Loss of fluid retention in high-mileage manual transmissions
• Service replacement for worn or hardened original seals

Installation Notes and Tips

Confirm the transmission code before installation, since fitment depends on the exact gearbox, including Suzuki M59, Suzuki MM5, Audi 089, Toyota T50, Toyota K40, Toyota K50, Toyota T40, and Aisin N30/N31 applications. Verify shaft and housing dimensions against the listed measurements: 25.000 mm shaft, 38.000 mm housing bore, and 7.000 mm width. Clean the bore and shaft surface thoroughly before installing the seal to help ensure proper seating.

Quality Assurance

National has more than 75 years of sealing product experience and continues to develop sealing solutions for modern and legacy vehicles. Part number 222535 is built as a metric oil seal for manual transmission service and is backed by National’s established sealing expertise.