Inner Rear Hub Oil Seal 8-94336314-0 8-94367959-0 For ISUZU NKR55 4JB1 Truck

The Inner Rear Hub Oil Seal (OEM Numbers: 8-94336314-0 / 8-94367959-0 / 8943363140 / 8943679590) is a premium-quality, direct replacement wheel-end sealing component designed specifically for ISUZU NKR55 series light-duty trucks equipped with 4JB1 diesel engines.

This precision-engineered oil seal is installed on the inner side of the rear wheel hub, where it seals against the axle tube or spindle. Its primary function is to retain wheel bearing lubricant within the hub assembly while preventing water, dust, and road contaminants from entering. Proper sealing is critical for maintaining correct bearing lubrication, preventing premature bearing failure, and ensuring reliable wheel-end operation under heavy loads.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
• Oil-Resistant Material: Premium rubber compound resists degradation from gear oil, grease, heat, and additives
• Durable Metal Case: Steel outer case ensures secure press-fit into the hub or axle housing
• Garter Spring: Maintains constant sealing pressure against the spindle for reliable leak prevention
• Precision Lip: Molded lip ensures tight sealing while minimizing friction and spindle wear
• Prevents Oil Leaks: Eliminates rear hub oil or grease seepage, maintaining proper bearing lubrication
• Protects Wheel Bearings: Keeps contaminants out and lubricant in, ensuring reliable bearing operation
• Direct Replacement: Matches OE seal dimensions, lip profile, and case design
• Essential for Wheel-End Service: Recommended replacement during hub, bearing, or brake service
• Long Service Life: Engineered for light-duty commercial truck applications

This inner rear hub oil seal is specifically designed for ISUZU light-duty trucks and commercial vehicles. Common applications include:

• ISUZU NKR55 (Light-Duty Trucks)
• ISUZU NHR, NPR, ELF series (as applicable)
• ISUZU 4JB1 Engine Specifications:
  • 4-Cylinder, Inline Diesel
  • Displacement: 2.8L
  • Valvetrain: OHV
  • Application: Light-duty trucks and commercial vehicles

Also compatible with various ISUZU models using the same rear hub inner seal configuration

Professional mechanic or wheel-end specialist installation recommended:

1. Ensure vehicle is safely raised - Use appropriate jack stands or a lift to support the axle
2. Remove the rear wheel - Remove the wheel and tire assembly to access the hub
3. Remove the brake drum or caliper - If equipped, remove the brake components to access the hub
4. Remove the hub assembly - Remove the axle shaft and hub nut; pull the hub assembly off the spindle
5. Remove the old oil seal - Carefully pry out the old seal from the hub or axle housing using a seal puller; avoid damaging the bore
6. Clean the housing bore - Thoroughly clean the seal bore and spindle surface; remove all old seal residue and debris
7. Inspect the spindle - Check the spindle surface for wear, scoring, or corrosion; replace if damaged
8. Lubricate the new seal - Apply clean gear oil or wheel bearing grease to the seal lip and outer case
9. Install the new seal - Press the new seal evenly into the housing bore using a proper seal driver; ensure it is fully seated
10. Check seal orientation - Ensure the seal lip faces the correct direction (toward the bearing/lubricant side)
11. Reinstall the hub assembly - Install the hub, bearings, and axle shaft; adjust bearing preload as specified
12. Reinstall brake components - Reinstall the brake drum or caliper and wheel
13. Check hub oil level - Top up hub oil or grease as required
14. Road test - Test drive to verify no leaks and smooth wheel operation
15. Check for leaks - Inspect the hub area for oil or grease seepage after driving

• Material Verification: Confirms rubber compound and metal case meet ISUZU oil resistance and durability specifications
• Dimensional Inspection: Inner diameter, outer diameter, and thickness verified within OEM tolerances
• Lip Profile Inspection: Seal lip geometry checked for proper sealing and spindle contact
• Spring Tension Testing: Garter spring tension verified for consistent sealing pressure
• Visual Inspection: 100% checked for molding defects, cracks, or surface imperfections
• Packaged Safely: Protected and packaged to prevent damage during transit

• Neutral export packing or customized packaging available
• Carton or wooden case for safe transportation
• Fast delivery for stock items
• Shipping by Express Air or Sea