National 99250 Differential Pinion Repair Sleeve - Rear Outer

National 99250 Differential Pinion Repair Sleeve Overview

The National 99250 differential pinion repair sleeve is engineered for precise fitment and durability in heavy-duty driveline applications. Designed specifically for Chevrolet, Dodge, and GMC trucks, this stainless steel repair sleeve ensures reliable performance in Ram 2500, Ram 3500, Sierra 3500, Sierra 3500 Classic, and Silverado 3500 models.

• Flanged outside diameter: 2.828 inches (71.83 mm)
• Installation depth: 1.375 inches (34.93 mm)
• Overall width: 0.938 inches (23.83 mm)
• Width on shaft: 0.781 inches (19.84 mm)
• Shaft size range: 2.500 to 2.506 inches (63.5 to 63.65 mm)
• Constructed from corrosion-resistant stainless steel

Durable Stainless Steel Construction and Precise Dimensions

Manufactured from high-grade stainless steel, the National 99250 repair sleeve offers excellent resistance to wear and corrosion, critical for driveline components exposed to harsh environments. The flanged outside diameter of 2.828 inches provides a secure seating surface, while the installation depth of 1.375 inches ensures proper engagement with the differential pinion shaft. With an overall width of 0.938 inches and a shaft width on 0.781 inches, this sleeve is designed to maintain the integrity of the pinion shaft fitment within the differential assembly.

Compatible Vehicles and Applications

This differential pinion repair sleeve is compatible with specific heavy-duty truck models, including Chevrolet Silverado 3500, GMC Sierra 3500 and Sierra 3500 Classic, as well as Dodge Ram 2500 and Ram 3500. The part number 99250 is tailored to fit pinion shafts sized between 2.500 and 2.506 inches, making it suitable for restoring worn or damaged pinion shafts in these vehicles.

Common Repair Uses

• Restoring worn or damaged differential pinion shafts
• Eliminating pinion shaft play or looseness
• Repairing shaft surface imperfections to prevent premature wear
• Maintaining proper gear alignment within the differential
• Extending the service life of driveline components

Installation Notes and Tips

Ensure the pinion shaft is clean and free of debris before installation. The repair sleeve should be pressed onto the shaft to the specified installation depth of 1.375 inches for optimal fit. Use appropriate tools to avoid damaging the sleeve or shaft during installation. Verify shaft size compatibility within the 2.500 to 2.506 inch range to ensure proper fitment.

Quality Assurance and Warranty

National parts are manufactured to meet strict industry standards for durability and performance. The 99250 differential pinion repair sleeve is made from stainless steel to resist corrosion and wear. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.