ISUZU 4JJ1 Cylinder Head Gasket Set with Multi-Layer Steel (MLS) OEM Fit 5-87815452-J for Complete Engine Overhaul
| Head Gasket Bore: | Ø97.00 Mm | Cylinder Head Torque: | 70 N·m (7.1 Kgf·m / 51 Lb Ft) |
| Engine Displacement: | 2,999 Cc | Head Gasket Material: | Multi-Layer Steel (MLS) / MT |
| Cylinders: | 4 | Head Gasket Thickness: | 1.15 Mm (standard) |
| Bolt Turn Angle: | 60°–75° Turn Angle | Compression Ratio: | 16.5:1 (Euro IV) / 17.5:1 (Euro V) |
| High Light: | Multi-Layer Steel Cylinder Head Gasket Set,OEM Fit 5-87815452-J Engine Overhaul Gasket Set,Complete Overhaul Coverage ISUZU 4JJ1 Gasket Kit |
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The Cylinder Head Gasket Set with OEM numbers 5-87815452-J, 5-87815452-0, and 5878154520 is a verified direct-fit replacement for ISUZU 4JJ1 / 4JJ1-TC / 4JJ1-TCX 2.999L diesel engines. This complete gasket kit provides all essential seals required for professional cylinder head and engine overhaul.
The cylinder head gasket set serves as the critical sealing system for the engine's combustion chamber and fluid passages. Each precision-engineered gasket maintains perfect seals between mating surfaces—cylinder head and engine block, intake and exhaust manifolds, oil pan, valve cover, and other critical sealing points. The head gasket withstands combustion pressures exceeding 160 bar while sealing coolant passages and oil galleries.
- Coolant or oil seepage at the cylinder head joint with visible fluid traces
- Compression loss between cylinders causing misfiring, rough idle, and power loss
- Exhaust gas bubbles in the radiator from combustion gases entering cooling system
- Oil contamination with coolant creating milky emulsion or oil slicks in coolant
- Persistent overheating from combustion gases in cooling system
| Verification Item | Data / Standard | Source / Method |
|---|---|---|
| Part Number (Short) | 5-87815452-J | ISUZU OEM Parts Database |
| Part Number (Long) | 5-87815452-0 | ISUZU OEM Parts Database |
| Factory Number | 5878154520 | ISUZU OEM Parts Database |
| Engine Compatibility | 4JJ1 / 4JJ1-TC / 4JJ1-TCX | ISUZU application catalog |
| Engine Displacement | 2,999 cc | ISUZU engine specification |
| Head Gasket Thickness | 1.15 mm (standard) | ITE specification |
| Head Gasket Material | Multi-Layer Steel (MLS) | Product specification |
| Cylinder Head Bolt Torque | 70 N·m + 60°–75° turn angle | ISUZU 4JJ1 workshop manual |
| Certification | ISO/TS 16949 | Third-party system audit |
| Brand | Model | Engine | Years |
|---|---|---|---|
| ISUZU | D-MAX | 4JJ1-TC / 4JJ1-TCX | 2004–2020 |
| ISUZU | MU-X | 4JJ1-TC / 4JJ1-TCX | 2013–2020 |
| ISUZU | NLR / NNR (ELF) | 4JJ1-TCS | 2008–Present |
| ISUZU | NPR / NQR | 4JJ1 | 2008–Present |
| Holden | Colorado RC | 4JJ1-TCX | 2008–2012 |
| Holden | Rodeo RA | 4JJ1-TC | 2003–2008 |
Superior sealing under high combustion pressures and thermal cycling
Precision-matched to 4JJ1 cylinder bore for direct drop-in fit
Includes all essential gaskets and seals for comprehensive engine rebuild
Withstands extreme temperatures and pressure variations
Direct replacement without modification requirements
Full traceability with material certificates and batch inspection
| QC Item | Verification Method / Standard |
|---|---|
| Head Gasket Thickness | Micrometer, 100% inspection (1.15 mm ±0.05) |
| Head Gasket Bore | CMM, 100% inspection (Ø97.00 mm ±0.05) |
| Material Composition | Spectrometer analysis, batch sampling |
| Compression Resistance | Compression tester, batch sampling |
| Temperature Resistance | Thermal cycling test (−40°C to +200°C), batch sampling |
| Fluid Resistance | ASTM D471 immersion test, batch sampling |
| Kit Completeness | 100% component count verification |
- Preparation: Remove engine from vehicle or position for top-end access. Drain coolant and oil. Disconnect all hoses, wiring, and fuel lines
- Disassembly: Remove cylinder head bolts in reverse tightening sequence. Carefully lift cylinder head and remove all old gaskets
- Inspection: Check cylinder head and block decks for flatness. Inspect for cracks, corrosion, or pitting. Resurface if necessary
- Head Gasket Installation: Place new multi-layer steel head gasket on block dowels. Ensure correct orientation and verify notch code/thickness grade
- Cylinder Head Installation: Carefully lower cylinder head onto gasket. Lubricate head bolt threads and heads with clean engine oil
- Torque Sequence: Tighten cylinder head bolts in specified numerical order: Stage 1-2: 70 N·m each, Stage 3-4: 60°–75° turn angle each
- Final Assembly: Install remaining gaskets and seals. Reconnect all components. Refill with fresh coolant and engine oil
| Fastener | Torque |
|---|---|
| Cylinder Head Bolts (Stages 1–2) | 70 N·m (7.1 kgf·m / 51 lb ft) |
| Cylinder Head Bolts (Stages 3–4) | 60°–75° turn angle |
| Main Bearing Cap Bolts | 166 N·m (16.9 kgf·m / 122 lb ft) |
- Standard Packaging: Sealed bag + moisture barrier + carton
- Custom Packaging: Neutral packaging, customer-branded packaging available
- Suitable For: Engine overhaul workshops, ISUZU parts distributors, fleet maintenance centers
- Supply Capacity: Stable batch supply with batch-level quality reports
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