SKF 18687 Transfer Case Output Shaft Seal - Front, Rear or Rear Rearward

Reliable Transfer Case Output Shaft Seal for Select GM and Ford Vehicles

The SKF 18687 Transfer Case Output Shaft Seal is engineered to provide a precise fit and durable sealing performance for a range of trucks and SUVs. Designed with a polyacrylate sealing surface, this seal ensures effective protection against leaks and contamination in transfer case applications.

• Width: 1.370 inches for optimal sealing depth
• Outside Diameter: 2.754 inches to match OEM specifications
• Shaft Diameter: 1.875 inches for accurate shaft fitment
• Sealing Surface Type: Polyacrylate for enhanced wear resistance
• Compatible with multiple makes including Cadillac, Chevrolet, Ford, GMC, Hummer, Lincoln, Oldsmobile, and Ram

Technical Details and Compatibility

The SKF 18687 transfer case output shaft seal is designed to meet the exacting standards required for transfer case applications in heavy-duty and light-duty trucks and SUVs. Its polyacrylate sealing surface offers improved resistance to heat and friction, which helps maintain a secure seal over extended service intervals. The seal’s dimensions—1.370 inches in width, 2.754 inches outside diameter, and 1.875 inches shaft diameter—ensure a precise fit for transfer case output shafts on vehicles such as the Chevrolet Silverado 1500, Ford F-150, GMC Sierra 1500, Cadillac Escalade, and Ram 1500 models.

Applications and Common Issues Addressed

• Prevents transfer case fluid leaks that can lead to drivetrain damage
• Protects transfer case internals from dirt and debris contamination
• Reduces wear on output shaft bearings by maintaining proper lubrication
• Helps maintain transfer case performance and reliability
• Addresses common seal failures due to age, heat, or mechanical wear

Installation Notes and Tips

When installing the SKF 18687 transfer case output shaft seal, ensure the transfer case output shaft and bore are clean and free of debris. Use appropriate seal installation tools to avoid damaging the polyacrylate sealing surface. Lubricate the seal lip lightly with transfer case fluid before installation to reduce initial wear. Verify the seal is seated evenly and flush with the housing to prevent leaks.

Quality Assurance and Warranty

SKF manufactures the 18687 transfer case output shaft seal to meet stringent quality standards, ensuring consistent performance and durability. This part is backed by SKF’s quality assurance processes, providing confidence in its fit and function for compatible Cadillac, Chevrolet, Ford, GMC, Hummer, Lincoln, Oldsmobile, and Ram vehicles. Warranty coverage details are available through SKF and authorized distributors.