FAG SS3242 Differential Pinion Seal - Rear

FAG SS3242 Differential Pinion Seal

The FAG SS3242 differential pinion seal is built for rear axle sealing performance where contamination control and lubricant retention matter. It uses Viton sealing material with a metal spring design and auxiliary lip to help maintain a secure seal at the pinion area.

Key Features

• Part number: SS3242
• Seal type: metal, spring, auxiliary lip
• Sealing material: Viton
• Bore diameter: 4.035 in / 102.489 mm
• Seal outside diameter: 4.04 in / 102.616 mm
• Seal width: 2.48 in / 62.992 mm
• Designed for rear differential pinion sealing applications
• Cross-reference: National 100727

Detailed Description

FAG SS3242 is a differential pinion seal engineered to help protect driveline components from dirt, dust, and moisture while retaining gear oil at the pinion interface. The Viton sealing material is selected for demanding sealing environments, and the metal spring plus auxiliary lip design supports consistent contact at the sealing surface. This part number is used in rear axle applications across heavy-duty trucks, including Ford F-350 Super Duty, Chevrolet Silverado 3500, GMC Sierra 3500, and Dodge Ram 2500 and Ram 3500 listings.

Fits 2001-2015 Ford F-350 Super Duty, Rear, Dual Rear Wheels; Schaeffler Seal Global Number 413 3242 100. Fits 2011-2012 Ford F-350, Rear, Dual Rear Wheels; Schaeffler Seal Global Number 413 3242 100. Fits 2001-2009 Ford F-350, Rear, Dual Rear Wheels; Schaeffler Seal Global Number 413 3242 100. Fits 2007 Chevrolet Silverado 3500 Classic, Rear. Fits 2007 GMC Sierra 3500 Classic, Rear. Fits 2003-2006 Chevrolet Silverado 3500, Rear. Fits 2003-2006 GMC Sierra 3500, Rear. Fits 2001-2002 Dodge Ram 2500, Rear. Fits 2001-2002 Dodge Ram 3500, Rear.

What This Part Helps Address

• Gear oil seepage at the differential pinion area
• Contamination from road dirt, dust, and moisture
• Seal wear from repeated axle rotation and heat exposure
• Loss of lubricant that can affect rear axle operation
• Service replacement for worn or damaged pinion seals

Installation Notes and Tips

Verify bore diameter, outside diameter, and seal width before installation to confirm the correct axle application. Inspect the pinion yoke and sealing surface for grooves, corrosion, or damage before fitting the new seal. Clean the housing thoroughly and install the seal squarely to avoid distortion or premature leakage. Confirm rear axle fitment by year, make, model, and configuration before ordering.

Quality Assurance

FAG designs sealing components to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. This seal is built for demanding wheel-end and driveline sealing requirements where precise fit and material selection are important.