FAG SS2588 Differential Pinion Seal - Rear

Reliable Differential Pinion Seal for GM and Isuzu Vehicles

The FAG SS2588 differential pinion seal is engineered to provide durable sealing performance for a range of Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac models. Designed with precision dimensions and high-quality materials, this seal helps maintain drivetrain integrity and prevent leaks.

• Seal Type: Metal construction with spring and auxiliary lip for enhanced sealing
• Sealing Material: Vamac for superior resistance to heat and wear
• Bore Diameter: 2.656 inches (67.462 mm)
• Seal Outside Diameter: 2.66 inches (67.564 mm)
• Seal Width: 1.524 inches (8.992 mm)

Technical Details and Material Specifications

The FAG SS2588 differential pinion seal features a metal body combined with a spring and auxiliary lip design to ensure a tight, reliable seal around the pinion shaft. The sealing lip is made from Vamac, a synthetic rubber known for its excellent resistance to heat, oil, and mechanical wear, making it suitable for demanding driveline applications. The precise bore diameter of 2.656 inches and outside diameter of 2.66 inches ensure a proper fit in the differential housing, while the seal width of 1.524 inches provides adequate surface contact to prevent fluid leakage.

Compatible Vehicle Applications

This differential pinion seal is compatible with a wide range of GM and Isuzu vehicles, including but not limited to:

• Buick models such as Century, LeSabre, and Regal
• Cadillac DeVille and Fleetwood
• Chevrolet Camaro, Caprice, Impala, and S10 Blazer
• GMC Jimmy, Safari, and Sonoma
• Isuzu Hombre and Bravada
• Oldsmobile Cutlass, Delta 88, and 98
• Pontiac Firebird, Grand Prix, and Sunbird

Using the FAG SS2588 ensures compatibility with these models’ driveline and axle assemblies, maintaining proper sealing and performance.

Common Issues Addressed by the SS2588 Differential Pinion Seal

• Prevents differential fluid leaks that can cause driveline damage
• Reduces contamination ingress into the differential housing
• Maintains proper lubrication of the pinion gear
• Minimizes wear on the pinion shaft and bearings
• Helps avoid costly repairs related to seal failure

Installation Notes and Tips

• Ensure the differential housing and pinion shaft are clean and free of debris before installation
• Use appropriate tools to avoid damaging the seal during installation
• Verify the seal orientation matches the original part for correct sealing lip placement
• Check for proper fitment dimensions: bore diameter 2.656 inches and outside diameter 2.66 inches
• Apply a light coating of differential fluid on the seal lip before installation to reduce initial wear

Quality Assurance and Warranty

FAG manufactures the SS2588 differential pinion seal to meet strict quality standards, ensuring reliable performance in automotive driveline applications. The use of Vamac sealing material and metal spring design contributes to long service life under normal operating conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.