FAG SS2857 Differential Pinion Seal - Rear

Overview of FAG Differential Pinion Seal SS2857

The FAG SS2857 differential pinion seal is engineered for reliable sealing performance in driveline applications. Designed specifically for Ford and Mercury vehicles, this seal ensures proper protection against leaks and contamination in models such as the Mustang, Bronco II, and Ranger.

• Seal Type: Metal with spring for secure fitment
• Sealing Material: Durable nitrile for resistance to oil and wear
• Bore Diameter: 2.623 inches (66.624 mm)
• Seal Outside Diameter: 2.627 inches (66.726 mm)
• Seal Width: 1.813 inches (10.643 mm)

Technical Details and Specifications

The FAG SS2857 differential pinion seal features a metal spring design that maintains consistent pressure on the sealing lip, preventing oil leaks under various operating conditions. The nitrile sealing material offers excellent resistance to heat, oil, and mechanical wear, making it suitable for the demanding environments found in Ford and Mercury driveline systems. With precise bore and outside diameters, this seal fits tightly to ensure optimal sealing performance.

Compatible Vehicles and Applications

This differential pinion seal is compatible with a range of Ford and Mercury models, including Bobcat, Bronco II, Capri, Cougar, Fairmont, LTD, Marquis, Monarch, Montego, Mustang, Pinto, Ranger, and Zephyr. It is designed to replace worn or damaged seals in these vehicles’ driveline and axle assemblies, helping maintain proper differential function.

Common Issues Addressed by the SS2857 Seal

• Prevents oil leaks from the differential pinion area
• Reduces contamination ingress that can damage internal components
• Maintains proper lubrication within the differential assembly
• Minimizes wear on the pinion shaft and bearings
• Helps avoid costly drivetrain repairs due to seal failure

Installation Notes and Tips

When installing the FAG SS2857 differential pinion seal, ensure the sealing surface and bore are clean and free of debris. Use appropriate tools to press the seal evenly into place without distortion. Verify the seal orientation matches the original part to maintain proper sealing function. It is recommended to inspect related components such as bearings and shafts for wear during installation.

Quality Assurance and Warranty

FAG manufactures the SS2857 differential pinion seal to meet strict quality standards, ensuring durability and reliable performance. The use of high-grade nitrile material and metal spring construction supports long service life. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region.