FAG SS2578 Differential Pinion Seal - Front Outer, Rear or Rear Outer

Reliable Differential Pinion Seal for Chevrolet, Ford, Pontiac, and Saturn

The FAG SS2578 differential pinion seal is engineered to provide durable sealing performance for select Chevrolet Equinox, Ford F-150, Pontiac Torrent, and Saturn Vue models. Designed with precision, this seal helps maintain drivetrain integrity by preventing leaks and contamination.

• Seal Type: Metal construction with spring and auxiliary lip for enhanced sealing
• Sealing Material: High-quality Viton for superior resistance to heat and chemicals
• Bore Diameter: 2.777 inches (70.536 mm) ensuring a precise fit
• Seal Outside Diameter: 2.783 inches (70.688 mm) for secure installation
• Seal Width: 1.812 inches (11.557 mm) providing optimal sealing surface

Technical Details and Material Specifications

The FAG SS2578 differential pinion seal features a metal body equipped with a spring and an auxiliary lip, designed to maintain consistent pressure against the shaft and prevent fluid leakage. The sealing element is made from Viton, a fluorocarbon elastomer known for its excellent resistance to high temperatures, oils, and chemicals commonly found in driveline environments. The precise bore and outside diameters ensure compatibility with the differential pinion shaft housings of Chevrolet Equinox, Ford F-150, Pontiac Torrent, and Saturn Vue vehicles. This seal’s width supports a robust sealing surface, reducing the risk of premature wear or failure.

Compatible Vehicles and Applications

This differential pinion seal is compatible with the following makes and models:

• Chevrolet Equinox
• Ford F-150
• Pontiac Torrent
• Saturn Vue

It is designed to maintain the integrity of the differential pinion assembly by preventing oil leaks and contamination, which can lead to drivetrain damage or reduced performance.

Common Issues Addressed by the FAG SS2578 Seal

• Prevents differential oil leaks that can cause lubrication failure
• Reduces contamination ingress to protect internal differential components
• Minimizes wear on the pinion shaft and bearings
• Maintains proper sealing pressure under varying operating conditions
• Helps avoid costly drivetrain repairs due to seal failure

Installation Notes and Tips

When installing the FAG SS2578 differential pinion seal, ensure the mating surfaces are clean and free of debris. Use appropriate tools to avoid damaging the seal during installation. Verify the seal orientation matches the original part, with the auxiliary lip facing the lubricant side. Proper installation torque and alignment are critical to prevent leaks and ensure long service life.

Quality Assurance and Warranty

FAG manufactures the SS2578 differential pinion seal to meet strict quality standards, using premium materials and precise engineering. While specific warranty details are not provided, FAG products are generally backed by manufacturer quality assurance to ensure reliable performance in automotive driveline applications.