National 99170 Differential Pinion Repair Sleeve - Front Outer or Rear Outer

National 99170 Differential Pinion Repair Sleeve Overview

The National 99170 Differential Pinion Repair Sleeve is engineered for precise fitment and durability in driveline applications. Designed specifically for select Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models, this stainless steel repair sleeve ensures reliable restoration of pinion shaft surfaces.

• Flanged outside diameter: 2.063 inches (52.4 mm)
• Installation depth: 0.813 inches (20.65 mm)
• Overall width: 0.500 inches (12.7 mm)
• Fits shaft sizes between 1.736 and 1.742 inches (44.09 - 44.25 mm)
• Width on shaft: 0.375 inches (9.53 mm)
• Constructed from corrosion-resistant stainless steel

Precision Engineering and Material Quality

This repair sleeve is manufactured from stainless steel to provide long-lasting resistance against wear and corrosion in differential pinion applications. The flanged outside diameter of 2.063 inches ensures a secure fit within the differential housing, while the installation depth of 0.813 inches allows for proper seating on the pinion shaft. With an overall width of 0.5 inches, the sleeve covers the necessary shaft area to restore surface integrity. The sleeve is designed to fit pinion shafts ranging from 1.736 to 1.742 inches in diameter, making it compatible with a range of driveline components found in classic and modern vehicles.

Compatible Vehicle Applications

This National 99170 repair sleeve is compatible with a variety of GM vehicles, including Buick models like the LeSabre and Riviera, Chevrolet trucks such as the C10 and C1500 Suburban, GMC pickups including the K10 and K1500, as well as Oldsmobile and Pontiac models like the Cutlass Supreme, Firebird, and GTO. It is suitable for use in differential pinion repairs on vehicles including the Chevrolet Camaro, Corvette, and Impala, ensuring proper fitment and function.

Common Repair Uses

• Restoring worn or damaged pinion shaft surfaces
• Correcting pinion shaft fitment issues in differential assemblies
• Preventing further wear and extending differential component life
• Addressing noise or vibration caused by pinion shaft wear
• Facilitating accurate gear alignment in driveline repairs

Installation Notes and Tips

Ensure the pinion shaft diameter falls within the specified range of 1.736 to 1.742 inches before installation. Clean the shaft thoroughly to remove any debris or corrosion. The sleeve should be pressed onto the shaft to the specified installation depth of 0.813 inches for optimal fit. Use appropriate tools to avoid damaging the sleeve or shaft during installation. Verify proper seating and alignment before reassembling the differential.

Quality Assurance and Warranty

National manufactures the 99170 Differential Pinion Repair Sleeve to meet industry standards for durability and precision. Constructed from stainless steel, this sleeve offers corrosion resistance and long service life. While specific warranty details are not provided, National products typically adhere to strict quality control processes to ensure reliable performance in automotive driveline repairs.