Multi-Layer Steel (MLS) Cylinder Head Gasket OEM Spec for ISUZU 4HE1 4.8L Diesel Engine
| OEM Part Number: | 8-97354198-0 / 8973541980 / 8-97138068-1 / 8971380681 | Thickness: | T = 1.80 (for 8-97354198-0) / T = 1.75 (for 8-97138068-1) |
| Engine Compatibility: | ISUZU 4HE1 4.8L Diesel | Vehicle Models: | ISUZU NPR, NPR-HD, NQR |
| Gasket Type: | Multi-Layer Steel (MLS) / Laminated Steel | Notch Designation: | 2 Notch (T=1.80) / 1 Notch (T=1.75) |
| Production Years: | 1998 – 2004 | Material: | Laminated Steel With Anti-Fatigue Design |
| High Light: | Multi-Layer Steel (MLS) Cylinder Head Gasket,OEM Spec Head Gasket,ISUZU 4HE1 4.8L Diesel Engine Gasket |
||
The Cylinder Head Gasket with OEM numbers 8-97354198-0 (also listed as 8973541980) and 8-97138068-1 (also listed as 8971380681) is a verified direct-fit replacement for ISUZU NPR, NPR-HD, and NQR trucks equipped with the 4HE1 4.8L diesel engine. As one of the most critical sealing components in the engine, the cylinder head gasket seals the combustion chamber, coolant passages, and oil channels between the engine block and cylinder head.
- Real Shop Test Data: Precision-engineered Multi-Layer Steel (MLS) construction delivers superior sealing performance under high combustion pressure
- Proven Durability: Built with laminated steel construction designed for minimal fatigue and maximum reliability
- Installation Success Rate: 99% direct replacement fitment confirmed across thousands of engine rebuilds
- OEM Cross-Reference Verified: Replaces 8973541981, 8973541980, 8971380681, 8971380680, 8970792180
If your cylinder head gasket is failing, you may experience one or more of the following symptoms:
- Engine Overheating: Temperature gauge rising above normal
- Coolant Loss: Unexplained drop in coolant level with no visible external leaks
- White Smoke from Exhaust: Steam-like white smoke indicating coolant entering the combustion chamber
- Oil Contamination: Milky or frothy appearance on the oil dipstick or oil filler cap
- Loss of Engine Power: Significant reduction in engine performance due to compression loss
- Bubbling in Radiator: Air bubbles visible in the radiator or coolant reservoir
⚠️ Warning: A failing cylinder head gasket can lead to severe engine damage including warped cylinder heads, cracked engine blocks, or complete engine failure. Prompt replacement is essential.
⚠️ IMPORTANT: This gasket is available in multiple thicknesses. Verify your engine's requirement before ordering.
| Part Number | Thickness | Notch | Application |
|---|---|---|---|
| 8-97354198-0 / 8973541980 | T = 1.80 | 2 Notch | ISUZU 4HE1 4.8L |
| 8-97138068-1 / 8971380681 | T = 1.75 | 1 Notch | ISUZU 4HE1 4.8L |
Why Thickness Matters: Using the correct gasket thickness is critical for maintaining the proper engine compression ratio. The "notch" indicator on the gasket (1 notch or 2 notches) corresponds to the factory-specified thickness. Always verify the notch count on your original gasket or consult the ISUZU workshop manual before ordering.
⚠️ Please confirm with your customer:
- Notch count on the original gasket (1 or 2 notches)
- Original part number from the old gasket
- Engine serial number for precise verification
| Brand | Model | Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR | Standard / NPR-HD | 4HE1 4.8L | 1998-2004 |
| ISUZU | NQR | Standard | 4HE1 4.8L | 1998-2004 |
| ISUZU | NRR | -- | 4HE1 4.8L | 1998-2004 |
⚠️ Important:
- This gasket is designed for ISUZU 4HE1 4.8L diesel engines only
- Two thickness options available — see Thickness Selection Guide above
- Compatible with NPR, NPR-HD, and NQR models from 1998-2004
- Always verify fitment using the VIN number or original OEM part number before installation
- Professional installation is strongly recommended
Delivers superior sealing under extreme combustion pressure and temperature
Minimizes gasket fatigue and increases reliability against gas and water leakage
Enables correct compression ratio maintenance with OEM notch designation system
Withstands extreme combustion conditions while maintaining optimal engine performance
Guarantees factory-fit quality and performance with verified OEM cross-reference
No modifications required with 99% installation success rate
Guarantees zero wear, immediate sealing performance, and full service life
Our manufacturing and inspection processes ensure every cylinder head gasket meets or exceeds ISUZU OEM standards.
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify thickness, notch count, and all sealing surface dimensions match OE blueprint specifications |
| Material Composition | Laminated steel layer analysis to verify anti-fatigue characteristics and heat resistance |
| Leakage Test | 100% pressure testing to guarantee zero gas, coolant, or oil leakage |
| Compression Simulation | Dynamic compression testing to verify sealing performance under operating conditions |
| Durability Cycle Test | 500+ hour thermal cycling and pressure cycling to verify long-term reliability |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
⚠️ IMPORTANT: Professional Installation Highly Recommended
Replacing a cylinder head gasket requires proper torque specifications, correct gasket positioning, and thorough engine component inspection.
Pre-Installation Checklist:
- Verify gasket thickness matches the original — confirm notch count (1 or 2 notches)
- Inspect the cylinder head and engine block sealing surfaces for warpage or damage — resurface if necessary
- Clean all sealing surfaces thoroughly — any debris can cause premature gasket failure
- Check cylinder head bolt threads and replace if damaged
- Use new cylinder head bolts if recommended by the workshop manual
Installation Guidelines (Reference ISUZU workshop manual):
- Ensure the engine is completely disassembled with the cylinder head removed
- Clean the cylinder head and engine block sealing surfaces with appropriate solvent
- Check the flatness of both surfaces using a precision straightedge and feeler gauge
- CRITICAL: Position the new gasket correctly — ensure the notch orientation matches OEM specifications
- Install the cylinder head onto the gasket
- CRITICAL: Follow the angular tightening method specified in the ISUZU workshop manual
- Torque cylinder head bolts in the correct sequence and to the specified torque values
- Reassemble remaining engine components
- Refill with fresh coolant and engine oil
- Start the engine and check for leaks
- Perform a cooling system pressure test to verify seal integrity
Maintenance Schedule:
- Inspection: During any cooling system service or if overheating symptoms appear
- Replacement: Immediately if failure symptoms appear. Also recommended during major engine overhauls
Each cylinder head gasket is securely packed in a protective carton to prevent shipping damage. Suitable for wholesale distributors, engine rebuild shops, truck repair facilities, and fleet owners.
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts Part Number: 5873102680 5-87310268-0 Product Name: Engine Block Car Model: ISUZU 100P Engine Model: ISUZU 4JB1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia...
Engine Overhaul Gasket Kit 5-87811868-1 5878118681 For ISUZU NPR 4HF1
High-quality Engine Overhaul Gasket Kit 5-87811868-1 for ISUZU NPR trucks equipped with 4HF1 engine. Complete OEM-equivalent gasket set designed for full engine overhaul and long-term sealing performance. Part Number: 5-87811868-1 5878118681 Product Name: Engine Overhaul Gasket Kit Car Model: ISUZU ...
Cylinder Liner Kit 5-87810143-1 5878101431 For ISUZU FSR 6BF1
High-quality Cylinder Liner Kit 5-87810143-1 for ISUZU FSR trucks equipped with the 6BF1 engine. OEM-equivalent replacement designed to restore engine performance and extend service life. Part Number: 5-87810143-1 5878101431 Product Name: Cylinder Liner Kit Car Model: ISUZU FSR Engine Model: ISUZU ...
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1 Part Number: 8970211711 8-97021171-1 Product Name: Water Pump Assembly Car Model: ISUZU NPR59 Engine Model: ISUZU 4BC2 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle ...
