FAG SS2953 Differential Pinion Seal - Rear

FAG SS2953 Differential Pinion Seal

The FAG SS2953 differential pinion seal is built for rear axle applications that need reliable sealing at the pinion shaft. With a nitrile sealing material, metal spring construction, and precise bore and outside diameter dimensions, it is suited for restoring proper differential sealing on classic Chrysler and Dodge rear ends.

Compatible With 1957-1969 Chrysler Imperial, New Yorker, Newport, and Town & Country, plus 1965-1969 Dodge Monaco, 1966-1969 Dodge Dart, and 1966-1969 Dodge Charger rear applications that use the listed 8.75" ring gear and pinion shaft configurations. FAG SS2953 is also referenced by cross numbers including National 7216 and Four Seasons 18912 for the same application.

Key Features

• Part number: SS2953
• Category: differential pinion seal for driveline and axle sealing systems
• Seal type: metal with spring
• Sealing material: nitrile
• Bore diameter: 3.105 in / 78.867 mm
• Seal outside diameter: 3.11 in / 78.994 mm
• Seal width: 1.875 in / 47.625 mm
• Designed to help keep dirt, dust, and moisture out of the wheel end and axle sealing area

Product Details

FAG SS2953 is a differential pinion seal engineered to match vehicle-specific sealing requirements for rear axle service. The seal dimensions and spring-loaded metal design support a secure fit at the pinion area, while the nitrile sealing element is selected for sealing performance in driveline environments. This part number is used across multiple Chrysler and Dodge rear axle applications, including Chrysler Imperial, Chrysler New Yorker, Chrysler Newport, Chrysler Town & Country, Dodge Charger, Dodge Dart, and Dodge Monaco models listed in the fitment data.

Common Problems This Seal Can Address

• Gear oil leakage at the differential pinion area
• Contamination from road dirt, dust, and moisture entering the axle seal area
• Loss of lubricant around the pinion shaft seal surface
• Noise or wear concerns related to low differential fluid level
• Seal replacement needs during rear axle service on classic Chrysler and Dodge vehicles

Installation Notes and Tips

Verify the axle housing, ring gear size, and pinion shaft configuration before ordering. This seal is listed for rear applications only, and fitment notes reference 8.75" ring gear setups with 1.75" pinion shaft specifications on several vehicles. Inspect the pinion seal surface for wear or scoring before installation, and confirm the replacement seal matches the original dimensions and application requirements.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. The SS2953 uses a metal spring seal design with nitrile sealing material for consistent axle sealing performance in the specified applications.