FAG SS2865 Differential Pinion Seal - Front, Rear or Rear Rearward

FAG SS2865 Differential Pinion Seal

FAG SS2865 is a differential pinion seal built with a nitrile sealing element, metal reinforcement, a spring, and an auxiliary lip for controlled sealing at the axle pinion. With a 2.776 in bore diameter, 2.781 in outside diameter, and 1.813 in width, it is sized for specific rear axle applications across Ford, Lincoln, Mercury, and Jaguar vehicles.

This seal is used in rear differential service where pinion sealing is critical to keeping gear oil contained and contamination out of the axle assembly. FAG SS2865 is a direct-fit style replacement for applications that call for Schaeffler Global Number 413 2865 100.

Key Features

• Part number: SS2865
• Differential pinion seal for rear axle service
• Seal type: metal, spring, auxiliary lip
• Sealing material: nitrile
• Bore diameter: 2.776 in / 70.51 mm
• Outside diameter: 2.781 in / 70.637 mm
• Width: 1.813 in / 46.05 mm
• Cross-reference: Bosch 18136

Detailed Description

FAG SS2865 is engineered to meet vehicle manufacturer specifications for sealing performance and dimensional accuracy. The metal case provides support, the spring helps maintain sealing contact, and the auxiliary lip adds an additional barrier against dirt, dust, and moisture. In rear axle service, that combination helps maintain lubricant retention at the pinion area while protecting internal driveline components from contamination.

Compatible With Ford Mustang rear applications, Ford F-150 rear applications, Ford Explorer rear applications, Lincoln Town Car rear applications, Mercury Grand Marquis rear applications, and other listed rear axle configurations that specify Schaeffler Global Number 413 2865 100. It also appears in fitment for Ford Ranger rear, Ford Expedition rear, Lincoln Navigator rear, and Jaguar S-Type rear applications.

What It Helps Address

• Gear oil leakage at the differential pinion
• Contamination entering the rear axle housing
• Seal wear from age, heat, and driveline use
• Noise or service issues related to low lubricant level
• Replacement needs during rear differential repair

Installation Notes and Tips

Verify the bore diameter, outside diameter, width, and axle application before installation. Confirm the vehicle’s rear axle configuration and differential type, since fitment varies by model, year, ring gear size, and axle code. Clean the sealing surface thoroughly and inspect the pinion yoke and shaft area for wear before installing the new seal. For best results, match the replacement to the exact application listed for SS2865.

Quality Assurance

FAG designs seals using high-quality materials and application-specific specifications to support consistent sealing performance in demanding driveline environments. This part cross-references Bosch 18136 for the same application.