FAG SR3493 Differential Pinion Repair Sleeve - Rear

FAG SR3493 Differential Pinion Repair Sleeve

The FAG SR3493 differential pinion repair sleeve restores a worn sealing surface without removing or machining the shaft. Made from heat-treated stainless steel, it adds a precise sealing surface that helps extend shaft life and reduce premature wear in rear axle applications.

Key Features

• Precision repair sleeve for damaged differential pinion shafts
• Heat-treated stainless steel construction for durability
• Provides additional sealing on worn shaft surfaces
• Installs without shaft removal or machining
• Cost-effective repair solution for rear axle sealing issues
• Dimensions: 1.739 in shaft diameter, 2.063 in flange diameter, 0.375 in width on shaft, 0.813 in installation depth, 0.5 in overall width

Detailed Description

FAG SR3493 is a differential pinion repair sleeve used to restore the sealing area on damaged shafts in rear driveline service. Its stainless steel, heat-treated construction is engineered to create a new sealing surface where wear has occurred, helping maintain proper seal contact and reduce further shaft damage. This makes the SR3493 a practical repair choice for Chevrolet C10, K10, Camaro, El Camino, Nova, and GMC K1500 rear axle applications where pinion seal wear is present. This part cross-references National 99170 and Timken KWK99170 for the same application.

What It Helps Fix

• Grooved or worn pinion seal surfaces on the differential shaft
• Rear axle oil seepage caused by seal contact wear
• Premature shaft wear from repeated seal failure
• Repair situations where shaft replacement is not required
• Service costs tied to machining or shaft removal

Installation Notes and Tips

Install the sleeve over the damaged sealing area at the specified depth and verify the shaft diameter matches the listed 1.739 in measurement before assembly. Clean the shaft thoroughly before installation so the new sealing surface seats correctly. Use the sleeve only on applications that match the confirmed rear fitment data, including 1975-1981 Chevrolet C10 rear, 1967-1972 Chevrolet Camaro rear, 1965-1972 Chevrolet El Camino rear, and 1979-1981 GMC K1500 rear. The SR3493 is also listed for additional Chevrolet and GMC rear axle applications with 8.875 in, 8.75 in, or 12-bolt cover configurations as noted in the fitment data.

Quality Assurance

FAG manufactures this repair sleeve as a precision driveline service component using heat-treated stainless steel for consistent sealing performance and wear resistance. The SR3493 is built for rear differential repair work where restoring the shaft surface is preferred over replacing the shaft.