Radiator Inlet Water Hose 8-97133142-0 8971331420 For ISUZU NPR Truck Cooling System

The Radiator Inlet Water Hose (OEM Numbers: 8-97133142-0 / 8971331420) is a premium-quality, direct replacement cooling system component designed specifically for ISUZU NPR series trucks. This upper radiator hose connects the radiator to the engine thermostat housing, delivering cooled coolant from the radiator back into the engine block to maintain optimal operating temperature and prevent overheating.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications
• High-Quality Heat-Resistant Rubber: EPDM compound resists hot coolant, ozone, and temperature extremes
• Reinforcement Layer: Synthetic fiber reinforcement prevents hose expansion and kinking
• Precision-Molded Fit: Exact routing and bends match original hose for simple installation
• Leak-Proof Design: Smooth inner surface and precise ends ensure secure, leak-free seal
• Long Service Life: Engineered for heavy-duty commercial truck applications
• Cost-Effective Repair: Affordable replacement that prevents costly engine damage

This radiator inlet water hose is specifically designed for ISUZU medium-duty trucks and commercial vehicles:

• ISUZU NPR: Medium-Duty Trucks (NPR66, NPR70, NPR75, etc. - verify with VIN)
• Engine Applications: ISUZU NPR Diesel Engines (verify engine model with VIN)
• Also compatible with various ISUZU models using the same radiator inlet hose configuration

1. Ensure engine is cool - Never work on cooling system when hot
2. Disconnect battery - Always disconnect negative terminal first
3. Drain coolant - Place drain pan and drain coolant below hose level
4. Remove old hose - Loosen hose clamps and carefully remove old hose
5. Inspect fittings - Check for corrosion, cracks, or damage
6. Clean surfaces - Remove old residue and debris
7. Install new hose - Position in correct routing and slide onto fittings
8. Install hose clamps - Position clamps and tighten securely
9. Refill with coolant - Use correct coolant mixture (50/50 antifreeze/water)
10. Bleed cooling system - Start engine and bleed air per manufacturer procedure
11. Check for leaks - Inspect all connections thoroughly
12. Check operating temperature - Verify gauge reading
13. Road test - Verify proper cooling system operation

• Material Verification: Confirms rubber compound meets ISUZU specifications
• Dimensional Inspection: Verified within OEM tolerances
• Pressure Testing: Ensures hose integrity under operating pressure
• Heat Resistance Testing: Performance across specified temperature range
• Visual Inspection: 100% checked for manufacturing defects
• Packaged Safely: Protected to prevent transit damage