Cylinder Head Gasket for ISUZU 4JJ1 4JK1 Engines — Multi-Layer Steel (MLS) 1.15mm Thickness with 3-Notch Design
Basic Properties
Place of Origin:
China
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
ISUZU NKR 4JJ1 4JK1
Trading Properties
Minimum Order Quantity:
10 pcs
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| OEM Part Number: | 8-98135955-0 / 8981359550 / 8-98241039-0 / 8982410390 | Gasket Thickness: | 1.15 Mm |
| Gasket Type: | 3-Notch / 3-Hole | Construction Type: | Multi-Layer Steel (MLS) / Metal Gasket |
| Engine Compatibility: | ISUZU 4JJ1, 4JJ1-TC, 4JK1, 4JK1-TC | Material: | Laminated Steel / Stainless Steel |
| Diameter: | 97 Mm | Cooling Type: | Engine Coolant Circulation |
| High Light: | Multi-Layer Steel (MLS) Cylinder Head Gasket,1.15mm Thickness Engine Gasket,3-Notch Design Gasket |
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Product Description
Cylinder Head Gasket 8-98135955-0 8-98241039-0 for ISUZU NKR 4JJ1 4JK1 — OEM MLS 1.15mm 3-Notch
Product Overview
The Cylinder Head Gasket with OEM numbers 8-98135955-0 (also listed as 8981359550) and 8-98241039-0 (also listed as 8982410390) is a verified OEM-grade direct replacement for ISUZU 4JJ1 and 4JK1 diesel engines, commonly found in NKR and NPR trucks, D-MAX pickups, and construction equipment.
- Real Shop Test Data: Precision-engineered Multi-Layer Steel (MLS) construction with 97mm diameter verified against ISUZU OEM specifications
- Proven Durability: Laminated steel construction rated for 300,000+ km under normal operation
- Installation Success Rate: 99% direct replacement fitment confirmed across thousands of engine rebuilds
- OEM Cross-Reference Verified: Replaces 8-98135955-0, 8981359550, 8-98241039-0, 8982410390, 8-97328868-2, 8973288682
Failure Symptoms
If your cylinder head gasket is failing, you may experience one or more of the following symptoms:
- Engine Overheating: Temperature gauge consistently 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 combustion chamber
- Oil Contamination: Milky or frothy appearance on 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 radiator or coolant reservoir
⚠️ Important: 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.
Thickness & Notch Selection Guide
⚠️ CRITICAL: ISUZU 4JJ1/4JK1 engines use three different thickness head gaskets. Using the wrong gasket can cause engine damage.
| Gasket Type | Notch / Holes | Thickness | Part Number Reference |
|---|---|---|---|
| Type A | 1-Notch / 1-Hole | 1.05 mm | 8-97328866-2 |
| Type B | 2-Notch / 2-Hole | 1.10 mm | 8-98135954-0 |
| Type C | 3-Notch / 3-Hole | 1.15 mm | 8-98135955-0 / 8-98241039-0 |
How to Determine the Correct Gasket:
- Check the notch count on your original gasket (1, 2, or 3 notches)
- The correct gasket thickness is determined by the piston projection from the cylinder block upper surface
- Always verify with the engine serial number for precise identification
Vehicle & Engine Compatibility
Primary Applications — Automotive:
| Brand | Model | Series / Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | NKR | N-Series | 4JJ1 3.0L, 4JK1 2.5L | 2004-2012 |
| ISUZU | NPR | N-Series | 4JJ1 3.0L, 4JK1 2.5L | 2004-2012 |
| ISUZU | D-MAX | TFR / TFS | 4JJ1-TC 3.0L, 4JK1-TC 2.5L | 2003-2012 |
Cross-Brand Applications — Construction & Industrial Equipment:
- Hitachi: Crawler Excavators ZX55, ZX60, ZX65, ZX70, ZX110, ZX120, ZX130, ZX135, ZX160, ZX180
- JCB: Crawler Excavators JS70, JS75, JS80, JS130, JS145, JS160, JS180
- Case: Crawler Excavators CX130, CX135, CX145, CX160, CX180
- Kobelco: Crawler Excavators SK55, SK60, SK70
- Sumitomo: Crawler Excavators SH120, SH160
- Takeuchi: Crawler Excavators TB070, TB114
⚠️ Important: This cylinder head gasket is designed for ISUZU 4JJ1 and 4JK1 diesel engines only. This is a Type C — 3-Notch (1.15mm) gasket — verify your engine requires this thickness before ordering.
Features & Benefits
OEM Specification — ISUZU Genuine
Guarantees factory-fit quality and performance — verified by ISUZU OEM part numbers
Multi-Layer Steel (MLS) Construction
Delivers superior sealing under extreme combustion pressure and temperature
1.15 mm Thickness (Type C / 3-Notch)
Enables correct compression ratio maintenance for engines requiring maximum gasket thickness
97 mm Diameter
Precision-matched to 4JJ1/4JK1 cylinder bore specifications
Anti-Fatigue Design
Minimizes gasket fatigue and increases reliability against gas and water leakage
Cross-Industry Compatibility
Fits ISUZU trucks and construction equipment from Hitachi, JCB, Case
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 1.15mm thickness, 3-notch count, and 97mm diameter |
| Material Composition | Laminated steel layer analysis to verify anti-fatigue characteristics |
| Leakage Test | 100% pressure testing to guarantee zero gas, coolant, or oil leakage |
| Compression Simulation | Dynamic compression testing to verify sealing performance |
| Durability Cycle Test | 500+ hour thermal cycling to verify 300,000+ km service life |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
Installation & Maintenance Recommendations
⚠️ 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 Type C / 3-Notch (1.15mm) designation
- Inspect cylinder head and engine block sealing surfaces for warpage or damage
- 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 workshop manual
Installation Guidelines (Reference ISUZU workshop manual):
- Ensure engine is completely disassembled with cylinder head removed
- Clean cylinder head and engine block sealing surfaces with appropriate solvent
- Check flatness of both surfaces using precision straightedge and feeler gauge
- Position new gasket correctly — ensure 3-notch orientation matches OEM specifications
- Install cylinder head onto gasket
- Follow angular tightening method specified in ISUZU workshop manual
- Torque cylinder head bolts in correct sequence to specified torque values
- Reassemble remaining engine components
- Refill with fresh coolant and engine oil
- Start engine and check for leaks
- Perform cooling system pressure test to verify seal integrity
Packaging & Supply
- Packaging: Each cylinder head gasket securely packed in protective packaging
- Packaging Options: Neutral Box / Color Box / Custom Brand Package
- Suitable for: Wholesale distributors, engine rebuild shops, truck repair facilities, construction equipment service centers, and fleet owners
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