National 470331N Differential Pinion Seal - Front Outer or Rear Outer

Overview of National 470331N Differential Pinion Seal

The National 470331N differential pinion seal is engineered to provide reliable sealing performance for Jeep driveline systems. Designed specifically for Jeep Cherokee, CJ5, CJ7, Comanche, Grand Cherokee, Grand Wagoneer, Scrambler, Wagoneer, and Wrangler models, this oil seal helps maintain proper lubrication and prevent leaks.

• Inside diameter: 1.843 inches (46.810 mm)
• Outside diameter: 2.754 inches (69.950 mm)
• Thickness/width: 0.500 inches (12.700 mm)
• Material: durable polyacrylate for effective sealing
• Housing bore compatibility: 2.750 inches (69.850 mm)
• Part number: 470331N, series 470000

Technical Details and Specifications

This differential pinion seal from National is constructed with polyacrylate material, known for its resistance to heat and oil degradation. The seal’s precise dimensions—1.843 inch inside diameter and 2.754 inch outside diameter—ensure a secure fit on the pinion shaft and housing bore, which measures approximately 2.750 inches. With a thickness of 0.500 inches, the seal maintains optimal contact pressure to prevent oil leakage while allowing smooth rotation of the differential pinion shaft.

Compatible Jeep Models and Applications

The National 470331N differential pinion seal is compatible with a range of Jeep vehicles, including Cherokee, CJ5, CJ7, Comanche, Grand Cherokee, Grand Wagoneer, Scrambler, Wagoneer, and Wrangler. This makes it a suitable replacement part for maintaining the driveline integrity of these models, especially in applications where the differential pinion seal requires replacement due to wear or damage.

Common Issues Addressed by the 470331N Differential Pinion Seal

• Prevents oil leaks from the differential pinion shaft area
• Reduces contamination ingress into the differential housing
• Maintains proper lubrication for differential components
• Minimizes wear on the pinion shaft and bearings
• Helps avoid costly drivetrain repairs caused by seal failure

Installation Notes and Tips

When installing the National 470331N differential pinion seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the original part to maintain proper sealing function. Lubricate the seal lip lightly with gear oil before installation to reduce initial wear.

Quality Assurance and Warranty Information

National manufactures the 470331N differential pinion seal to meet industry standards for durability and performance. The polyacrylate material offers resistance to oil and heat, contributing to a longer service life. This part is backed by National’s quality control processes, ensuring consistent fit and function for Jeep Cherokee, CJ5, CJ7, Comanche, Grand Cherokee, Grand Wagoneer, Scrambler, Wagoneer, and Wrangler models. Warranty coverage details should be confirmed with the original equipment provider or distributor.