Timken 8622 Differential Pinion Seal - Front

Timken 8622 Differential Pinion Seal

Timken 8622 is a front differential pinion seal built for manual transmission applications that use an 8.5 inch ring gear and transfer case output shaft differential pinion bearing. It is a direct-fit sealing solution for Chevrolet K2500, GMC K2500, and related GM truck and SUV applications where reliable lubricant control matters.

• Ribbed rubber inner diameter helps seal minor spindle imperfections and supports positive spindle seating
• Internal contamination exclusion system helps block debris that can contribute to leakage
• Vent holes allow lubricant flow around the seal lip to reduce heat buildup
• Precision sealing design helps retain lubricant and keep contaminants out
• Reinforced outer case helps resist installation damage and improve durability

Fitment Details

• Fits 1988-2000 Chevrolet K2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1999-2000 Chevrolet Silverado 2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 2000 Chevrolet Suburban 2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1988-2000 GMC K2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1979-1986 GMC K2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1999-2000 GMC Sierra 2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 2000 GMC Yukon XL 2500, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1992-1999 Chevrolet K2500 Suburban, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1992-1999 GMC K2500 Suburban, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1979-1986 GMC K2500 Suburban, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1989-1991 Chevrolet V2500 Suburban, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1988-1991 GMC V2500 Suburban, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1988 Chevrolet V20 Suburban, front; manual transmission 8.5 inch ring gear and transfer case output shaft differential pinion bearing.
• Fits 1977-1982 Chevrolet K10, front; Non Spicer Axle.
• Fits 1977-1982 Chevrolet K10 Suburban, front; Non Spicer Axle.
• Fits 1979-1982 GMC K1500, front; Non Spicer Axle.
• Fits 1979-1982 GMC K1500 Suburban, front; Non Spicer Axle.
• Fits 1977-1980 Chevrolet K5 Blazer, front; Non Spicer Axle.
• Fits 1977-1980 GMC Jimmy, front; Non Spicer Axle.

What It Helps Address

• Front differential oil seepage at the pinion area
• Contamination entering the seal area during driveline operation
• Heat-related seal wear from lubricant breakdown
• Leakage caused by minor spindle surface imperfections
• Installation damage from a weak outer case

Installation Notes

Confirm axle and drivetrain configuration before installation, especially on GM trucks and SUVs with manual transmission and 8.5 inch ring gear applications. Clean the sealing surface thoroughly, inspect the spindle or shaft for wear, and seat the seal evenly to avoid distortion. Timken 8622 is also a strong search match for Chevrolet K2500, GMC K2500, and GMC Sierra 2500 front differential pinion seal replacement needs.

Quality Assurance

Timken oil and grease seals use precision sealing designs to control lubricant loss and keep contaminants out. The reinforced outer case and contamination exclusion features support consistent sealing performance in demanding driveline service. This part cross-references no listed aftermarket part numbers for the same application.