Elring 039.780 Manual Transmission Main Shaft Seal

Manual Transmission Main Shaft Seal for OE-Style Service

Elring 039.780 is a manual transmission main shaft seal built for sealing the transmission shaft area with a precise 38.0 mm inside diameter, 52.0 mm outside diameter, and 10.0 mm thickness. It uses NBR (nitrile butadiene rubber) and a radial shaft seal design B, with no dust lip.

Key Features

• Manual transmission main shaft seal for transmission sealing service
• Inside diameter: 38.0 mm
• Outside diameter: 52.0 mm
• Thickness: 10.0 mm
• NBR (nitrile butadiene rubber) construction
• Radial shaft seal design B
• Without dust lip
• Elring part number 039.780

Detailed Description

Elring 039.780 is designed for manual transmission applications where the main shaft seal must maintain a tight seal around the rotating shaft. The NBR sealing material is commonly used in drivetrain service for its resistance to oil exposure, while the 38.0 mm x 52.0 mm x 10.0 mm dimensions help support proper housing and shaft fitment. This seal is a practical choice for transmission reseal work on vehicles such as Mercedes-Benz and BMW applications that use this size and seal profile. The part number 039.780 is also useful when cross-checking OE-style replacement needs during transmission repair.

This part cross-references Mercedes-Benz 000 997 17 46 and BMW 23 12 1 201 390 for the same application.

What It Helps Fix

• Transmission fluid seepage at the main shaft area
• Oil residue around the manual transmission housing
• Seal wear from shaft rotation and age
• Leak-related clutch contamination concerns
• Service issues during transmission reseal repairs

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal depth before installation. Clean the sealing surface thoroughly and inspect the shaft for grooves or scoring that could affect sealing performance. Use proper installation tools to seat the seal evenly and avoid damaging the sealing lip during assembly. Confirm the replacement matches the original seal dimensions and profile before reassembly. For fitment verification, compare the original part number and transmission specifications on Mercedes-Benz, BMW, and other OE-reference applications.

Quality Assurance

Elring is known for sealing-system components used in drivetrain service, and this seal is built to match the dimensional requirements of manual transmission repair work. Part number 039.780 provides a direct reference for technicians and buyers sourcing an OE-style main shaft seal.