FAG SS3862 Differential Pinion Seal - Rear

Reliable Differential Pinion Seal for Driveline Systems

The FAG SS3862 differential pinion seal is engineered to provide durable sealing performance in driveline and axle applications. Designed with precision, this seal helps maintain optimal differential function by preventing fluid leaks and contamination.

• Seal Type: Metal construction with spring and auxiliary lip for enhanced sealing
• Sealing Material: Polyacrylate for resistance to heat and wear
• Bore Diameter: 125.425 mm (4.938 inches) ensuring a precise fit
• Seal Outside Diameter: 125.552 mm (4.943 inches) for secure installation
• Seal Width: 2.938 mm (34.925 mm) providing effective sealing surface

Technical Details and Specifications

The FAG SS3862 differential pinion seal features a metal body combined with a spring and auxiliary lip design, which enhances its ability to maintain a tight seal under varying operating conditions. The polyacrylate sealing material offers excellent resistance to automotive fluids and high temperatures, making it suitable for demanding driveline environments. With a bore diameter of 125.425 mm and an outside diameter of 125.552 mm, this seal fits precisely in compatible differential housings. The seal width of 2.938 mm ensures a robust sealing interface, reducing the risk of leaks and contamination.

Applications and Problem Solving

• Prevents differential oil leaks that can lead to driveline damage
• Protects internal components from dirt and debris ingress
• Maintains proper lubrication within the differential assembly
• Reduces wear on pinion bearings by retaining lubricant
• Helps avoid costly repairs due to seal failure in vehicles like Ford F-150 and Chevrolet Silverado

Installation Notes and Tips

When installing the FAG SS3862 differential pinion seal, ensure the bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without distortion. Verify the seal orientation matches the auxiliary lip facing the lubricant side to maximize sealing efficiency. It is recommended to inspect the pinion shaft and bearing surfaces for wear before installation to ensure optimal performance.

Quality Assurance and Warranty

FAG manufactures the SS3862 differential pinion seal to meet stringent quality standards for automotive driveline components. The use of high-grade polyacrylate material and metal construction ensures durability and reliable sealing performance. While specific warranty details are not provided, FAG products typically adhere to industry standards for material and workmanship quality.