SKF 18903 Transfer Case Input Shaft Seal

Reliable Transfer Case Input Shaft Seal for Nissan and INFINITI

The SKF 18903 Transfer Case Input Shaft Seal is engineered to provide a precise fit and durable sealing performance for select Nissan and INFINITI models. Designed with a polyacrylate sealing surface, this seal helps maintain transfer case integrity by preventing fluid leaks and contamination.

• Width: 0.315 inches for optimal sealing depth
• Outside Diameter: 2.809 inches ensuring a secure fit
• Shaft Diameter: 1.890 inches matching OEM specifications
• Polyacrylate sealing surface for enhanced resistance to wear and fluid degradation
• Compatible with Nissan Armada, Frontier, Pathfinder, TITAN, Xterra and INFINITI QX56

Technical Details and Material Specifications

The SKF 18903 transfer case input shaft seal features a polyacrylate sealing surface, which offers improved chemical resistance and durability compared to traditional rubber seals. Its precise dimensions—0.315 inch width, 2.809 inch outside diameter, and 1.890 inch shaft diameter—ensure a tight seal around the input shaft, reducing the risk of fluid leaks that can lead to transfer case damage. This seal is manufactured to meet or exceed OEM standards, making it suitable for use in demanding automotive environments.

Compatible Vehicles and Applications

This transfer case input shaft seal is compatible with a range of Nissan and INFINITI vehicles, including:

• Nissan Armada
• Nissan Frontier
• Nissan Pathfinder
• Nissan TITAN
• Nissan Xterra
• INFINITI QX56

It is designed specifically for the transfer case input shaft, helping to maintain proper lubrication and prevent contamination in these models.

Common Issues Addressed by the SKF 18903 Seal

• Prevents transfer case fluid leaks that can cause low fluid levels
• Reduces contamination from dirt and debris entering the transfer case
• Minimizes premature wear of the input shaft and transfer case components
• Helps maintain transfer case performance and longevity
• Eliminates noise and vibration caused by fluid loss or seal failure

Installation Notes and Tips

When installing the SKF 18903 transfer case input shaft seal, ensure the sealing surface and shaft are clean and free of debris. Use appropriate tools to avoid damaging the seal during installation. Verify the seal is seated evenly and flush with the transfer case housing to maintain proper sealing. It is recommended to inspect the input shaft for wear or damage before installation to ensure optimal performance.

Quality Assurance and Warranty

SKF manufactures the 18903 transfer case input shaft seal to meet stringent quality standards. While specific warranty details are not provided, SKF products are known for consistent manufacturing quality and reliability. Using this seal helps maintain the integrity of your transfer case system and supports long-term vehicle operation.