Elring 843.660 Manual Transmission Main Shaft Seal

Elring 843.660 Manual Transmission Main Shaft Seal

Elring 843.660 is a manual transmission main shaft seal built for the transmission input shaft on select Porsche 911 applications. It uses FPM (fluoride rubber) for sealing performance, along with a dust lip to help keep contaminants away from the shaft area.

• Manual transmission main shaft seal for transmission sealing service
• Inside diameter: 26.5 mm
• Outside diameter: 40.0 mm
• Thickness: 13.0 mm
• FPM (fluoride rubber) construction
• Dust cover with dust lip
• Radial shaft seal design: ASW
• Swirl type: LD, left-hand twist

Fitment Details

Compatible with Porsche 911 manual transmission applications listed below. Fits 1998 Porsche 911, inlet. Fits 1984-1997 Porsche 911, transmission input shaft, with inner diameter 26.5 mm, outer diameter 40 mm, dust cover with dust lip, and left-hand twist swirl type.

This part cross-references Porsche OE number 999 113 326 41 for the same application.

What This Seal Helps Address

• Transmission fluid seepage at the main shaft area
• Contamination entering the seal area from road debris and dust
• Wear-related leakage around the transmission input shaft
• Service replacement for aged or hardened shaft seals

Installation Notes and Tips

Verify shaft diameter, seal orientation, and housing dimensions before installation. The left-hand twist swirl design and dust lip should match the original application, and the sealing surface should be clean and free of scoring. Confirm the part number 843.660 against the vehicle’s transmission specification before assembly.

Quality Assurance

Elring is known for sealing components used in automotive engine and transmission service. This seal is specified with precise dimensional data and material details to support correct OE-style replacement selection for Porsche 911 manual transmission repairs.