National 100715V Differential Pinion Seal - Rear Outer

Overview of National 100715V Differential Pinion Seal

The National 100715V differential pinion seal is engineered to provide reliable sealing performance for driveline systems. Designed for use in various Chevrolet, Dodge, Ford, and GMC models, this oil seal helps maintain proper lubrication and prevent leaks in the differential assembly.

• Inside diameter: 1.874 inches (47.600 mm)
• Outside diameter: 3.163 inches (80.340 mm)
• Flanged outside diameter: 3.498 inches (88.860 mm)
• Thickness/width: 0.500 inches (12.700 mm)
• Material: durable fluoro-elastomer for enhanced resistance to heat and chemicals
• Compatible with shaft diameter of 1.874 inches (47.600 mm)

Technical Details and Specifications

This differential pinion seal from National is constructed from fluoro-elastomer, a material known for its excellent resistance to high temperatures, oils, and other automotive fluids. The seal features a precise inside diameter of 1.874 inches to fit the pinion shaft snugly, while the outside diameter of 3.163 inches ensures a secure fit within the housing bore measuring approximately 3.159 inches. The flanged outside diameter of 3.498 inches provides additional sealing surface and stability during operation. With a thickness of 0.500 inches, this seal balances durability and flexibility to maintain a tight seal under varying conditions.

Compatible Vehicles and Applications

The National 100715V differential pinion seal is compatible with a range of vehicles including Chevrolet E-250 and E-350 Econoline models, Dodge Ram 1500, 2500, and 3500 vans, Ford E-350 Super Duty, and GMC Savana 2500 and 3500. It is also suitable for the Dodge Viper. This part is designed specifically for driveline and axle sealing systems, ensuring proper function of the differential assembly in these vehicles.

Common Issues Addressed by the 100715V Pinion Seal

• Prevents differential oil leaks that can lead to driveline damage
• Maintains lubrication integrity for pinion gears and bearings
• Reduces contamination ingress into the differential housing
• Helps avoid premature wear of differential components
• Supports consistent differential performance under heavy load conditions

Installation Notes and Tips

When installing the National 100715V differential pinion seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the seal’s orientation matches the original part to maintain proper sealing function. Lubricate the seal lip lightly with gear oil before installation to reduce initial wear. Check for proper fitment on the pinion shaft diameter of 1.874 inches to avoid leaks.

Quality Assurance and Warranty

National manufactures the 100715V differential pinion seal to meet industry standards for durability and performance. The fluoro-elastomer material provides resistance to heat and chemical exposure common in automotive driveline environments. While specific warranty details may vary, National parts typically come with a limited warranty against defects in material and workmanship, ensuring confidence in the product’s reliability.