FAG SS2720 Differential Pinion Seal - Rear

FAG SS2720 Differential Pinion Seal

FAG SS2720 is a differential pinion seal built for rear axle service where sealing accuracy matters. It is engineered with a metal case, spring, and auxiliary lip design, plus polyacrylate sealing material to help keep gear oil contained and contaminants out of the differential assembly.

Compatible With rear applications on Pontiac GTO, Pontiac Firebird, Chevrolet Camaro, Chevrolet Monte Carlo, Chevrolet El Camino, and select Ford Econoline and E-100 Econoline models. The FAG SS2720 is a direct-fit style seal for vehicles that use the listed axle and ring gear configurations.

Key Features

• Part number: SS2720
• Differential pinion seal for rear axle service
• Seal type: metal, spring, and auxiliary lip
• Sealing material: polyacrylate
• Bore diameter: 2.623 in. / 66.624 mm
• Seal outside diameter: 2.627 in. / 66.726 mm
• Seal width: 1.656 in. / 42.062 mm
• Designed to help retain lubricant and block dirt, dust, and moisture

Detailed Description

FAG SS2720 is designed for differential pinion sealing in rear axle assemblies where the seal must maintain lubricant retention under demanding operating conditions. Its metal-and-spring construction, auxiliary lip, and polyacrylate sealing surface are specified to support a secure seal at the pinion area. This part number SS2720 is listed for rear fitment on 2004-2006 Pontiac GTO, 1985-1991 Pontiac Firebird, 1987-1990 Chevrolet Camaro, 1987-1988 Chevrolet Monte Carlo, 1987 Chevrolet El Camino, and select 1961-1969 Ford Econoline and E-100 Econoline models with the noted axle and ring gear configurations.

This part cross-references National 7457N and SKF 16545 for the same application.

What It Helps Address

• Gear oil leakage at the differential pinion area
• Contamination from dirt, dust, and moisture entering the axle housing
• Seal wear that can lead to lubricant loss over time
• Service issues on rear axle assemblies requiring the listed dimensions
• Replacement needs for Pontiac GTO, Pontiac Firebird, and Chevrolet Camaro rear differential service

Installation Notes and Tips

Verify axle configuration, ring gear size, and seal dimensions before installation. Match the bore diameter, outside diameter, and width to the original specification for the vehicle. Clean the sealing surface thoroughly and inspect the pinion area for wear or scoring before pressing in the new seal. For Ford Econoline and E-100 Econoline applications, confirm the correct WCC axle and ring gear size listed in the fitment notes.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. The seal construction is intended to protect wheel-end and driveline components from contamination while helping preserve grease or lubricant over the service life of the bearing or axle assembly.