Rear Crankshaft Oil Seal 8-97602379-0 8-94370637-0 For ISUZU FVZ34 6HK1 Engine 8976023790 8943706370

The Rear Crankshaft Oil Seal (OEM Numbers: 8-97602379-0 / 8-94370637-0 / 8976023790 / 8943706370) is a premium-quality, direct replacement engine sealing component designed specifically for ISUZU FVZ34 series heavy-duty trucks equipped with 6HK1 diesel engines.

This precision-engineered oil seal is installed at the rear of the crankshaft, where it seals the crankshaft against the flywheel housing or rear seal retainer. Its primary function is to retain engine oil within the crankcase while preventing oil from leaking into the clutch housing, flywheel area, or transmission bell housing.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
• Oil-Resistant Material: Premium rubber compound resists degradation from hot engine oil and additives
• Durable Metal Case: Steel outer case ensures secure press-fit into the rear seal retainer or housing
• Garter Spring: Maintains constant sealing pressure against the crankshaft for reliable leak prevention
• Precision Lip: Molded lip ensures tight sealing while minimizing friction and crankshaft wear
• Prevents Oil Leaks: Eliminates oil seepage at the rear of the engine, protecting the flywheel and clutch area
• Protects Driveline Components: Keeps oil out of the clutch housing and transmission bell housing
• Direct Replacement: Matches OE seal dimensions, lip profile, and case design
• Essential for Engine Service: Recommended replacement during clutch, flywheel, or transmission service
• Long Service Life: Engineered for heavy-duty commercial truck applications

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

• ISUZU FVZ34 (Heavy-Duty Trucks)
• ISUZU FR, FS, FT series (as applicable)
• ISUZU 6HK1 Engine Specifications:
  • 6-Cylinder, Inline Diesel
  • Displacement: 7.8L
  • Valvetrain: OHV
  • Application: Heavy-duty trucks, buses, and industrial equipment

Also compatible with various ISUZU models using the 6HK1 engine with the same rear crankshaft seal configuration.

Professional mechanic or engine builder installation recommended:

1. Ensure engine is cool - Allow the engine to cool completely before disassembly
2. Disconnect battery - Always disconnect the negative terminal before working
3. Drain engine oil - Drain the engine oil into a suitable container
4. Remove the transmission - Support the transmission and remove it from the vehicle
5. Remove the clutch and flywheel - Remove the clutch assembly and flywheel to access the rear crankshaft seal
6. Remove the old seal - Carefully pry out the old seal using a seal puller; avoid damaging the housing bore or crankshaft surface
7. Clean the housing bore - Thoroughly clean the seal bore and crankshaft surface; remove all old seal residue and debris
8. Inspect the crankshaft - Check the crankshaft seal surface for wear, scoring, or corrosion; replace or repair if damaged
9. Lubricate the new seal - Apply clean engine oil to the seal lip and outer case
10. Install the new seal - Press the new seal evenly into the housing bore using a proper seal driver; ensure it is fully seated
11. Check seal orientation - Ensure the seal lip faces the correct direction (toward the engine oil side)
12. Reinstall the flywheel and clutch - Install the flywheel and clutch assembly; align with a clutch alignment tool
13. Reinstall the transmission - Carefully reinstall the transmission and secure all mounting bolts
14. Refill engine oil - Fill with the correct grade and quantity of engine oil
15. Start and test - Start the engine; check for oil leaks at the rear crankshaft area
16. Road test - Test drive to verify proper operation and no leaks

• 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 crankshaft 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.