SKF 99170 Differential Pinion Repair Sleeve - Front or Rear

SKF 99170 Differential Pinion Repair Sleeve

SKF 99170 is a differential pinion repair sleeve for restoring a worn shaft sealing surface without removing the shaft. It is sized for a 1.739-inch shaft diameter and is used in rear axle applications across Chevrolet and GMC trucks, vans, and classic passenger cars.

Key Features

• Part number 99170 for differential pinion shaft repair
• 1.739-inch shaft diameter
• Refinishes worn sealing surfaces without changing seal size
• Engineered from AISI 304 stainless steel
• Includes an installation tool for proper sleeve placement
• Used in rear axle applications on Chevrolet C10, GMC K1500, and Corvette fitments

Detailed Description

SKF Speedi-Sleeve technology provides a precise repair surface for shafts that have been scored or worn by seal contact. Instead of regrinding or replacing the shaft, this sleeve creates a smooth outer sealing surface quickly and with minimal disassembly. The 99170 sleeve is built from stainless steel for durability and consistent sealing performance in driveline service.

Fitment includes rear applications such as 1975-1981 Chevrolet C10, 1979-1981 GMC C1500, and 1956-1979 Chevrolet Corvette, along with additional Chevrolet and GMC truck, van, and passenger car listings. This part cross-references 145899170 and 975999170 for the same application.

What It Is Used For

• Repairing a grooved or worn differential pinion shaft sealing area
• Restoring seal contact on rear axle pinion surfaces
• Addressing oil leakage caused by shaft wear
• Reducing downtime versus shaft regrinding
• Supporting service work on Chevrolet C10, GMC K2500, and Corvette rear axle assemblies

Installation Notes and Tips

• Confirm the shaft diameter is 1.739 inches before installation.
• Clean the shaft surface thoroughly so the sleeve seats evenly.
• Use the supplied installation tool to drive the sleeve into position.
• Verify the seal rides on the new sleeve surface after assembly.
• Review the vehicle-specific rear axle notes for 8.875-inch, 8.75-inch, or 8.50-inch ring gear applications where listed.

Quality Assurance

SKF manufactures Speedi-Sleeves to high quality standards using AISI 304 stainless steel for long service life and reliable sealing performance. Part number 99170 is built for consistent repair results in driveline and axle service.