ISUZU 4HF1 Engine Cylinder Liner Kit with Phosphatized Surface Treatment and OEM Standard Size Dry Liner Set
Key Attributes
Product Summary
ISUZU Cylinder Liner Kit 5-87811694-0 5878116940 for NPR 4HF1 Diesel Engine — OEM Standard Size Dry Cylinder Liner Set of 4. Features phosphatized surface treatment, precision machining, and ISO/TS16949 certification. Direct fit replacement with 1-year warranty, verified compatibility for 4HF1 engines.
Product Details
Phosphatized Surface Treatment Cylinder Liner Kit
,OEM Standard Size Dry Cylinder Liner Set
,4HF1 Engine Compatibility Engine Liner Kit
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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