SKF 4938 Automatic Transmission Shift Shaft Seal

Reliable Automatic Transmission Shift Shaft Seal for Precise Fit

The SKF 4938 Automatic Transmission Shift Shaft Seal is engineered to provide a secure and durable seal for transmission shafts. Designed with specific dimensions and a nitrile sealing surface, this seal ensures effective protection against fluid leaks in compatible vehicle models.

• Width: 0.250 inches for optimal sealing depth
• Outside Diameter: 0.879 inches for precise housing fit
• Shaft Diameter: 0.500 inches to match transmission shaft size
• Sealing Surface Type: Nitrile material for resistance to transmission fluids and wear
• Part Number: 4938 for accurate identification and replacement

Detailed Description of the SKF 4938 Shift Shaft Seal

This automatic transmission shift shaft seal from SKF is designed to maintain the integrity of the transmission system by preventing fluid leakage around the shift shaft. The 0.250-inch width provides sufficient sealing contact, while the 0.879-inch outside diameter ensures a snug fit within the transmission housing. The 0.500-inch shaft diameter specification matches common transmission shaft sizes, making it suitable for various vehicle applications. The nitrile sealing surface offers durability and resistance to heat, oil, and other transmission fluids, contributing to longer service life and reliable performance.

Common Applications and Issues Addressed

• Prevents automatic transmission fluid leaks around the shift shaft
• Reduces risk of transmission contamination and damage
• Helps maintain proper hydraulic pressure within the transmission
• Addresses wear-related seal failures in vehicles with compatible shaft dimensions
• Supports smooth shifting performance by maintaining seal integrity

Installation Notes and Tips

When installing the SKF 4938 shift shaft seal, ensure the transmission shaft and housing are clean and free of debris. Proper alignment during installation is critical to avoid seal damage. Use appropriate tools to press the seal evenly into place without distortion. Verify the shaft diameter matches the 0.500-inch specification to ensure compatibility. Consult vehicle-specific service manuals for detailed installation procedures related to your make and model.

Quality Assurance and Warranty Information

SKF manufactures the 4938 shift shaft seal to meet industry standards for durability and performance. The nitrile sealing surface is tested for resistance to transmission fluids and temperature variations. While specific warranty details are not provided, SKF products typically come with manufacturer-backed quality assurance to support reliable operation in automotive transmission systems.