Timken 3116N Manual Transmission Output Shaft Seal - Rear

Timken Manual Transmission Output Shaft Seal

The Timken 3116N manual transmission output shaft seal is built to retain gear oil at the transmission output while helping block dirt and road debris from entering the housing. Its precision sealing design, reinforced outer case, and ribbed rubber inner diameter support a secure seal on the shaft and housing surfaces.

For drivers searching for a manual transmission output shaft seal for Honda Civic, Toyota Corolla, or similar applications, Timken 3116N provides a direct-fit sealing solution based on shaft and bore dimensions rather than guesswork.

Key Features

• Timken 3116N manual transmission output shaft seal
• N-polyacrylate sealing material for transmission fluid resistance
• Outside diameter: 2.378 in. / 60.40 mm
• Shaft diameter: 1.375 in. / 34.92 mm
• Housing bore: 2.374 in. / 60.30 mm
• Width: 0.500 in. / 12.70 mm
• Counter-clockwise helix type
• Internal contamination exclusion system helps block debris entry
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up

Detailed Description

Timken 3116N is a manual transmission output shaft seal engineered for controlled lubricant retention at the transmission tail housing. The reinforced outer case helps resist installation damage, while the ribbed rubber inner diameter helps the seal seat against minor shaft imperfections for a more consistent fit. The seal’s internal exclusion features help reduce contamination at the sealing surface, and the vented design supports lubricant circulation around the lip to manage heat.

This part cross-references Anchor 3116 and Dorman - HELP 13739 for the same application. When replacing a leaking output shaft seal on a Honda Civic, Toyota Corolla, or other manual transmission vehicle, verify shaft diameter, housing bore, width, and helix direction before installation. Timken 3116N is a practical choice for restoring proper sealing performance in the transmission output area.

What It Helps Fix

• Transmission fluid leaking from the output shaft area
• Gear oil seepage at the tail housing seal surface
• Contamination entering the transmission through a worn seal
• Heat-related seal wear from poor lubricant flow
• Seal fit issues caused by minor shaft surface imperfections

Installation Notes and Tips

Confirm the shaft diameter, housing bore, width, and counter-clockwise helix type before installation. Clean the sealing surface and inspect the shaft for grooves, corrosion, or burrs that can affect seal life. Press the seal in evenly to avoid distortion of the outer case and lip.

For fitment-based searches, this part is commonly referenced for manual transmission output shaft seal replacement on Honda Civic and Toyota Corolla applications where the listed dimensions match the original seal.

Quality Assurance

Timken manufactures oil and grease seals with precision sealing designs intended to control lubricant loss and reduce contaminant intrusion. The 3116N reflects that engineering approach with a reinforced case, contamination exclusion features, and a sealing lip design focused on stable transmission service.