Crankshaft Front Oil Seal Spring-loaded Lip Seal High-Temperature Resistant OEM Standard for Isuzu FRR NKR NPR 4HK1 4HF1

The Crankshaft Front Oil Seal (OEM Numbers: 8-97329780-0 / 8973297800) is a premium-quality, direct replacement sealing component designed for Isuzu FRR, NKR, and NPR series medium-duty trucks equipped with 4HK1 or 4HF1 diesel engines.

• OE Quality: Manufactured to Isuzu dimensional and material specifications for perfect leak-proof fit
• High-Temperature Resistant: Elastomer lip withstands engine heat and oil exposure without hardening or cracking
• Garter Spring: Integrated spring maintains constant lip pressure on the rotating crankshaft hub
• Corrosion-Protected Metal Case: Prevents rust and ensures secure press-fit into the timing cover
• Restores Oil Containment: Eliminates front oil leaks that can damage timing components
• Direct Replacement: Easy installation with proper tools
• Cost-Effective: Affordable alternative to genuine dealer seals

This crankshaft front oil seal is specifically designed for Isuzu FRR, NKR, and NPR trucks with 4HK1 or 4HF1 engines.

• ISUZU FRR (medium-duty truck)
• ISUZU NKR (NKR55, NKR57, NKR59, NKR71, etc.)
• ISUZU NPR (NPR59, NPR66, NPR70, NPR71, NPR75, etc.)

1. Remove the accessory drive belt, harmonic balancer/crankshaft pulley, and timing cover (if necessary)
2. Clean the front of the engine block and the crankshaft hub
3. Remove the old seal using a seal puller, being careful not to scratch surfaces
4. Inspect the crankshaft hub sealing surface for grooves or damage
5. Lightly lubricate the new seal's lip with clean engine oil
6. Position the new seal squarely into the housing bore
7. Using a seal installer, press the seal evenly until properly seated
8. Reinstall the timing cover, harmonic balancer, and drive belt
9. Refill engine oil if drained
10. Start engine and check for leaks

• Material Verification: Rubber compound tested for oil resistance and heat aging
• Dimensional Inspection: All measurements verified against OE blueprints
• Spring Tension Test: Garter spring force measured within specification
• Leak Test: Sample seals tested on rotating shaft simulator with hot oil
• Visual Inspection: 100% checked for defects
• Packaged Safely: Seal wrapped to prevent deformation

• 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