Cylinder Liner 8-97351558-0 8973515580 For ISUZU NPR 4HG1 Diesel Engine

Premium-quality cylinder liner designed specifically for ISUZU NPR series trucks with 4HG1 diesel engines. This precision-engineered component restores cylinder bore surface, ensuring proper compression sealing and efficient heat transfer.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
• Precision-Honed Bore: Cross-hatch pattern promotes proper piston ring seating and oil retention
• High-Strength Alloy Cast Iron: Durable material withstands high pressures, temperatures, and friction
• Restores Engine Compression: Eliminates power loss, oil consumption, and blow-by caused by worn liners
• Optimal Heat Transfer: Efficiently transfers heat from the piston to the engine block, preventing overheating
• Direct Replacement: Matches OE liner dimensions and fitment for simple installation
• Long Service Life: Engineered for heavy-duty commercial diesel engine applications

Specifically designed for ISUZU medium-duty trucks and commercial vehicles:

• ISUZU NPR (Medium-Duty Trucks)
• ISUZU 4HG1 Engine: 4-Cylinder, Inline Diesel, 4.3L Displacement, OHV Valvetrain
• Various ISUZU models using the 4HG1 engine with the same cylinder liner configuration

Professional engine builder installation is essential:

1. Remove old liners using proper liner puller tool
2. Thoroughly clean cylinder bores and remove all debris
3. Inspect cylinder block for cracks or damage
4. Measure liner protrusion per manufacturer specifications
5. Install new liners using proper installation tool
6. Verify proper interference fit and bore roundness
7. Lightly hone if required for correct cross-hatch pattern
8. Always replace piston rings with new liners
9. Inspect pistons for wear and replace if necessary
10. Apply clean engine oil during assembly
11. Measure and adjust piston ring end gaps
12. Prime oil system before first start
13. Follow manufacturer break-in recommendations

• Material Verification: Confirms alloy composition meets ISUZU specifications
• Dimensional Inspection: Bore diameter, outer diameter, and length verified within OEM tolerances
• Hardness Testing: Liner surface hardness tested for proper wear resistance
• Surface Finish Inspection: Bore surface finish inspected for proper cross-hatch pattern
• Visual Inspection: 100% checked for casting or machining defects
• Packaged Safely: Protected with rust inhibitor and boxed to prevent damage

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