Elring 327.299 Manual Transmission Main Shaft Seal

Reliable Manual Transmission Main Shaft Seal for BMW Models

The Elring 327.299 manual transmission main shaft seal is engineered to provide durable sealing performance for a wide range of BMW vehicles. Designed with nitrile butadiene rubber (NBR), this seal ensures effective protection against leaks and contaminants in your transmission system.

• Material: NBR (nitrile butadiene rubber) for enhanced resistance to oil and wear
• Inside Diameter: 15.0 mm for precise fitment
• Outside Diameter: 21.0 mm ensuring secure sealing
• Thickness: 7.0 mm for optimal durability
• Includes dust lip to protect against dirt and debris
• Radial shaft seal design: Aw/bs for reliable sealing under dynamic conditions

Technical Details and Construction

The Elring 327.299 main shaft seal is constructed from high-quality NBR material, known for its excellent resistance to oils, fuels, and temperature variations commonly encountered in automotive transmissions. The seal’s 15.0 mm inside diameter and 21.0 mm outside diameter provide a precise fit for the manual transmission main shaft, while the 7.0 mm thickness contributes to its structural integrity. The integrated dust lip offers additional protection by preventing dust and debris from entering the transmission housing, which helps maintain smooth operation and prolongs component life. The radial shaft seal design (Aw/bs) is optimized for dynamic sealing applications, ensuring consistent performance during shaft rotation.

Compatible BMW Models

This manual transmission main shaft seal is compatible with numerous BMW models, including but not limited to the 118i, 120i, 125i, 128i, 135i, 135is, 220i, 228i, 230i, 318i, 320i, 323i, 325i, 328i, 330i, 335i, 420i, 428i, 430i, 520i, 525i, 528i, 530i, 535i, 545i, 550i, 635CSi, 645Ci, 650i, 735i, M3, M5, M6, X1, X5, Z3, and Z4. The Elring 327.299 seal is designed specifically for manual transmission applications in these vehicles, ensuring proper fit and function.

Common Applications and Problem Resolution

• Prevents transmission fluid leaks around the main shaft
• Protects transmission internals from dust and contaminants
• Maintains proper lubrication within the manual transmission
• Reduces wear on transmission components by ensuring effective sealing
• Helps avoid costly transmission repairs due to seal failure

Installation Notes and Tips

When installing the Elring 327.299 main shaft seal, ensure the transmission housing and shaft surfaces are clean and free of debris. Carefully align the seal to avoid damage to the dust lip and ensure even seating. Use appropriate tools to press the seal evenly into place without distortion. Verify the seal’s orientation matches the dust lip direction to maximize protection against contaminants.

Quality Assurance and Warranty

Elring manufactures the 327.299 main shaft seal to meet stringent quality standards, using durable NBR material and precise engineering. While specific warranty details are not provided, Elring products are known for consistent reliability and adherence to OEM specifications, supporting long-term transmission performance in compatible BMW models.