Timken 470380 Manual Transmission Input Shaft Seal - Rear Outer

Timken 470380 Manual Transmission Seal

Timken 470380 is a manual transmission input shaft seal built to help retain lubricant and block contaminants at the sealing point. It uses a reinforced outer case, a ribbed rubber inner diameter, and an internal contamination exclusion system to support a secure seal in demanding drivetrain service.

Compatible with classic Chevrolet and GMC manual transmission applications, including 1968-1972 Chevrolet C10 Suburban, 1968-1972 Chevrolet K10 Suburban, 1969-1972 Chevrolet Blazer, and 1970-1972 GMC Jimmy. This Timken 470380 seal is also cross-referenced to National 470380 for the same application.

Key Features

• Precision sealing design helps reduce lubricant escape at the input shaft
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter seals minor spindle imperfections and supports positive seating
• Internal contamination exclusion system helps keep debris out of the seal area
• Vent holes promote lubricant flow around the seal lip to help manage heat build-up

Detailed Description

Timken 470380 is a transmission sealing component for manual gearbox service where dependable lubricant control matters. The seal’s construction is engineered to maintain contact at the shaft surface while helping exclude dirt and other contaminants that can contribute to leakage and premature wear. For owners and technicians servicing a Chevrolet Blazer, Chevrolet C10 Suburban, Chevrolet K10 Suburban, or GMC Jimmy, this seal supports a proper repair at the transmission input shaft area.

Use this part when replacing a worn or leaking manual transmission input shaft seal on the listed 1968-1972 Chevrolet and GMC applications. The part number 470380 is a direct reference for identifying the correct seal in these drivetrain repairs.

What It Helps Fix

• Transmission fluid leakage at the input shaft seal
• Contamination entering the seal area
• Seal wear caused by heat build-up
• Leakage related to minor shaft surface imperfections
• Drivetrain service issues on classic Chevrolet and GMC manual transmission applications

Installation Notes and Tips

Inspect the shaft surface, seal bore, and surrounding components before installation. Clean the sealing area thoroughly and verify the replacement seal matches the application before pressing it into place. Proper seating is important for the Timken 470380 seal to perform as intended in manual transmission service.

Quality Assurance

Timken oil and grease seals are built with precision sealing features and durability-focused construction for drivetrain applications. The reinforced case, contamination control features, and heat-management venting reflect Timken’s engineering approach to sealing performance.