ISUZU 4HF1 Engine Cylinder Liner Kit with Phosphatized Surface Treatment and OEM Standard Size Dry Liner Set
| Total Length: | 180.0 Mm | Bore × Stroke: | 112.0 Mm × 110.0 Mm |
| Fitment Type: | Press Fit | Surface Treatment: | Phosphatized |
| Bore Diameter: | 112.0 Mm | Flange Thickness: | 6.0 Mm |
| Liner OD: | φ115.00 Mm | Flange Diameter: | 121.7 Mm |
| High Light: | Phosphatized Surface Treatment Cylinder Liner Kit,OEM Standard Size Dry Cylinder Liner Set,4HF1 Engine Compatibility Engine Liner Kit |
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The Cylinder Liner Kit with OEM numbers 5-87811694-0 / 5878116940 is a verified direct-fit replacement for ISUZU NPR trucks equipped with the 4HF1 diesel engine. This dry-type cylinder liner set forms the combustion chamber with the cylinder head and piston, providing a precision sliding surface for piston rings to ensure compression sealing and efficient heat transfer.
| Part Number: | 5-87811694-0 5878116940 |
| Product Name: | Cylinder Liner Kit |
| Car Model: | NPR |
| Engine Model: | 4HF1 |
| Condition: | 100% Brand New |
| Size: | Standard |
- Real Shop Test Data: Liner outer diameter φ115.00 mm (Block Grade 1), bore diameter 112.0 mm, total length 180 mm, flange diameter 121.7 mm
- Proven Durability: Rated for 100,000 km under normal operation
- Installation Fitment Confirmed: Standard press-fit dry cylinder liner design
- OEM Cross-Reference Verified: Replaces ISUZU OEM numbers 8-94389-276-3, 8-97176-727-0, 8-97176-728-0, 8-97144-174-0
When cylinder liners exhibit the following conditions, timely inspection and replacement are required:
- Longitudinal scoring or abnormal wear on liner inner wall
- Engine oil consumption with blue smoke from exhaust
- Reduced compression pressure, power loss, hard starting
- Abnormal coolant temperature rise
- Cavitation or pitting on liner outer wall
| Brand | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR | NPR66G / NPR66P / NPR66L | 4HF1 | 1992–2003 |
| ISUZU | ELF (NPR) | U-NPR66GR / U-NPR66PR / U-NPR66LR | 4HF1 | 1991–2003 |
| ISUZU | ELF Platform/Chassis | NKR7_ / NKS7_ / NHR6_ / NKR6_ / NPR_6 | 4HF1 | 1992–1999 |
| MAZDA | Titan | — | 4HF1 | 2004– |
| NISSAN | Atlas | — | 4HF1 | — |
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | CMM coordinate measuring |
| Material Hardness | Brinell hardness test |
| Surface Roughness | Roughness tester |
| Leak Test | Air tightness test |
| Roundness & Cylindricity | Precision gauge inspection |
| Phosphate Coating Inspection | Coating thickness test |
Certification: ISO/TS16949 Quality Management System Certified.
- Inspect block: Confirm block parent bore grade stamping, clean parent bore inner wall
- Measure parent bore: Use inside micrometer to measure parent bore diameter
- Cool liner: Place new liner in refrigerator or dry ice for easier press-fit
- Apply sealant: Apply appropriate anaerobic sealant to liner outer wall
- Press liner: Use specialized installation tool and press vertically into parent bore
- Check protrusion: Confirm liner top protrusion above block deck meets OEM specification
- Measure inner diameter: Confirm liner inner diameter within 112.0 mm standard range
- Every 10,000 km: Check oil consumption and coolant level
- Every 50,000 km: Check compression pressure and cylinder balance
- Every 100,000 km or when failure symptoms appear: Inspect cylinder liners
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