FAG SS3180 Differential Pinion Seal - Rear

FAG SS3180 Differential Pinion Seal

FAG SS3180 is a differential pinion seal built for driveline sealing applications where contamination control and lubricant retention matter. With a metal case, spring, and auxiliary lip design, it helps maintain a secure seal at the pinion area while supporting consistent operation in demanding axle environments.

Compatible With select driveline and axle applications, this seal is sized with a 4.063 in bore diameter, 4.068 in outside diameter, and 2.25 in width. The polyacrylate sealing material is selected for sealing performance in the differential pinion location, where heat, motion, and fluid exposure can affect long-term durability.

Key Features

• Part number SS3180 for differential pinion seal applications
• Metal, spring, and auxiliary lip seal type
• Polyacrylate sealing material for driveline sealing use
• 4.063 in bore diameter and 4.068 in outside diameter
• 2.25 in seal width for the specified axle housing fit
• Designed to help keep dirt, dust, and moisture out of the sealed area

Detailed Description

FAG SS3180 is engineered for differential pinion sealing where the pinion shaft passes through the axle housing. In applications such as Ford F-150 and Chevrolet Silverado driveline service, a properly matched pinion seal helps retain gear oil and reduce contamination at the differential entrance. The seal’s metal case supports stable seating, while the spring-loaded lip and auxiliary lip help maintain contact at the sealing surface. This part cross-references Gates 22653 for the same application.

What It Helps Solve

• Gear oil seepage at the differential pinion area
• Contamination from road dirt, dust, and moisture
• Seal wear caused by heat and rotating shaft movement
• Loss of lubricant that can affect axle operation
• Noise or driveline issues related to low differential fluid

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. Inspect the pinion yoke and sealing surface for grooves, corrosion, or damage, since surface wear can shorten seal life. Clean the bore thoroughly and install the seal squarely to avoid distortion. Confirm the application against the vehicle’s axle specification before service on Ford F-150 or Chevrolet Silverado models.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. The SS3180 is built for the demanding conditions found in differential sealing applications, where consistent material selection and dimensional accuracy are important.