Wet Type High-Alloy Cast Iron Cylinder Liner Kit OEM Standard for Isuzu NPR 4HF1 Engine

The Cylinder Liner Kit (OEM Numbers: 5-87811694-0 / 5878116940) is a premium-quality, direct replacement engine component designed for Isuzu NPR medium-duty trucks equipped with the 4HF1 diesel engine (3.9L).

• OE Quality: Manufactured to Isuzu dimensional and material specifications
• Complete Kit: Includes liners, piston rings, gaskets, and seals - all in one set
• Precision Machined: Accurate bore size and surface finish for optimal ring sealing
• Durable Cast Iron: Centrifugally cast for high strength and wear resistance
• Restores Engine Performance: Eliminates blow-by, oil consumption, and power loss
• Direct Replacement: Exact fit for 4HF1 engine block

This cylinder liner kit is specifically designed for Isuzu NPR trucks with 4HF1 engine.

• ISUZU NPR (NPR59, NPR66, NPR70, etc. with 4HF1)

• 4-Cylinder, Inline Diesel, Direct Injection
• Displacement: 3.9L (3856cc)
• Bore: 102 mm (typical)

Professional engine machinist required. Installation process is complex:

1. Engine disassembly - remove cylinder head, pistons, and old liners
2. Clean block bores and inspect for damage
3. Install new O-rings on liners
4. Press or drop new liners into block, ensuring correct alignment
5. Measure liner protrusion (adjust if needed)
6. Hone liners to final finish
7. Install new piston rings, retainers, gaskets, and seals
8. Reassemble engine

• Material Verification: Cast iron composition and hardness tested
• Dimensional Inspection: ID, OD, length, flange height verified
• Surface Finish: Plateau honed
• Hydrostatic Test: Liners pressure-tested
• Kit Completeness: All components counted and verified

• 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