Cylinder Head Gasket 1.575mm Thickness Metal & Asbestos Composite OEM Quality for ISUZU 4HK1 5.2L Engine
| Gasket Thickness: | 1.575mm | Alignment Marks: | 2 Alignment Marks (2 метки) |
| Material Composition: | Metal & Asbestos Composite | Operating Temperature: | Withstands Combustion Chamber Temperatures Exceeding 2000°C And -40°C Cold Starts |
| Sealing Pressure: | Withstands 150–200bar Cylinder Pressure | Unit Net Weight: | Approx. 0.4kg (400g) |
| High Light: | 1.575mm Thickness Cylinder Head Gasket,Metal & Asbestos Composite Engine Gasket,OEM Quality Head Gasket |
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The Cylinder Head Gasket with OEM numbers 8980555420 / 8-98055542-0 is a verified direct-fit replacement for ISUZU 4HK1 5.2L diesel engines. This gasket is installed between the cylinder block and cylinder head, serving as a critical component of the combustion chamber sealing system, widely used in ISUZU 700P, NPR75, NQR75, NQR90, FSR90/FSR34 (FORWARD 12.0) series trucks.
The cylinder head gasket is installed between the engine block and cylinder head, withstanding extreme temperatures (combustion temperatures can exceed 2000°C) and pressures (cylinder pressures up to 150–200bar). Its core function is to ensure absolute sealing of the combustion chamber's high-temperature, high-pressure gases, preventing power loss from gas leakage, while simultaneously sealing oil galleries and coolant passages between the block and head to prevent cross-contamination or external leakage. This product features a Metal & Asbestos composite material construction, with a thickness of 1.575mm and 2 alignment marks, capable of maintaining reliable sealing performance through repeated thermal expansion and contraction cycles.
- Loss of Power — Poor acceleration; difficulty climbing hills (compression loss reducing combustion efficiency)
- Abnormal Coolant Consumption — Coolant level drops consistently with no visible external leak (coolant entering combustion chamber)
- White Smoke from Exhaust — Persistent white smoke during start-up or operation (coolant vaporizing in combustion chamber)
- Milky/Thickened Engine Oil — White foam on dipstick or oil filler cap (coolant mixing with oil)
- Engine Overheating — Temperature gauge reads high consistently (combustion gases leaking into cooling system, causing air pockets)
- Hard Starting — Insufficient cylinder compression making starting difficult
- Fuel in Cooling System — Oil film or diesel odor in expansion tank (high-pressure gases breaching gasket into cooling system)
- Installation Success Rate: 98.5% direct fitment rate — confirmed across 127 repair orders (Jan 2024 – Jun 2025)
- Gasket Thickness: 1.575mm — exact match for 4HK1 engine cylinder head-to-block clearance
- Alignment Marks: 2 alignment marks — ensures precise positioning during installation
- Material: Metal & Asbestos composite — high-temperature resistance, pressure resistance, excellent sealing performance
- Operating Temperature: Withstands combustion chamber temperatures exceeding 2000°C and -40°C cold starts
- Sealing Pressure: Withstands 150–200bar cylinder pressure — ensures absolute combustion chamber sealing
- Unit Net Weight: Approx. 0.4kg (400g) — standard weight
- HS Code: 848410000 — standard customs classification
- Fig. No.: 011-002 — for easy reference and ordering
- Direct OEM Interchange: Direct replacement for ISUZU original parts — OE number 8980555420 / 8-98055542-0
- Alternate OE Numbers: 8980555421, 8982340630, 8982448250, 8982456190, 8982885030
| Part Number: | 8980555420 8-98055542-0 |
| Product Name: | Cylinder Head Gasket |
| Car Model: | 700P NPR |
| Engine Model: | 4HK1 |
| Condition: | 100% Brand New |
| Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
| Brand | Model/Chassis | Engine | Emission |
|---|---|---|---|
| ISUZU | 700P | 4HK1 / 4HK1-T | Euro 3 (E3) |
| ISUZU | NPR75 | 4HK1 / 4HK1-T | Euro 3 (E3) |
| ISUZU | NQR75 | 4HK1 / 4HK1-T | Euro 3 (E3) |
| ISUZU | NQR90 | 4HK1 / 4HK1-T | Euro 3 (E3) |
| ISUZU | FSR90 | 4HK1 / 4HK1-T | Euro 3 (E3) |
| ISUZU | FSR34 (FORWARD 12.0) | 4HK1 / 4HK1-T | Euro 3 (E3) |
| ISUZU | NPR94 | 4HK1 | — |
Excellent high-temperature resistance, pressure resistance, and sealing performance for 4HK1 engine high-load applications
Exact match for 4HK1 engine cylinder head-to-block clearance — ensures correct compression ratio and sealing pressure
Ensures precise positioning during installation, preventing misalignment and sealing failure
Direct replacement for original parts, no modification needed — exact match to ISUZU 4HK1 engine OEM specifications
Fits ISUZU 700P/NPR75/NQR75/NQR90/FSR90/FSR34 models and 4HK1/4HK1-T engines
Every gasket undergoes dimensional accuracy and material integrity inspection — ready to install out of the box
- Safety Prep: Disconnect battery negative terminal; drain coolant; remove related components
- Remove Cylinder Head: Loosen cylinder head bolts in workshop manual sequence; remove old cylinder head
- Clean Sealing Surfaces: Thoroughly clean block and head sealing surfaces — remove all old gasket residue
- Inspect Sealing Surfaces: Check block and head sealing surfaces for warping, scoring, or corrosion
- Measure Gasket Thickness: Confirm new gasket thickness is 1.575mm
- Inspect Head Bolts: Use new cylinder head bolts (old bolts must not be reused)
- Install New Gasket: Place new cylinder head gasket on block — ensure 2 alignment marks align with dowel pins
- Install Cylinder Head: Carefully place cylinder head on gasket — ensure all bolt holes are aligned
- Install New Bolts: Install new cylinder head bolts — apply engine oil to threads and bolt heads
- Tighten Bolts: Torque bolts in stages (3–4 steps) to workshop manual specification in correct sequence
- Angle Tightening: After final torque, perform angle tightening as per workshop manual
- Install Components: Install intake/exhaust manifolds, injectors, coolant hoses, and other components
- Fill Coolant & Oil: Fill with ISUZU-specified coolant and engine oil
- Bleed Air: Start engine; bleed cooling system air
- Check for Leaks: Idle engine — check for coolant, oil, or gas leaks
- Retorque Bolts: After engine reaches operating temperature and cools down, recheck cylinder head bolt torque
- Packaging: Neutral carton / Branded color box / Custom branded packaging
- Packaging Unit: 1 piece/box
- Packaging Dimensions: 35*3*3cm
- Unit Net Weight: Approx. 0.4kg (400g)
- HS Code: 848410000
- MOQ: 1 piece
- Supply Capacity: 1,000 pieces/month
- Delivery Time: 5 working days
- Target Customers: Truck parts wholesalers, repair chain stores, fleet purchasers, cross-border e-commerce sellers
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