Isuzu 4BD1 (Metal / MLS) Engine Gasket Kit for Excavator – Complete Overhaul Set | Isuzu Excavator Engine Parts
This premium Isuzu 4BD1 Engine Gasket Kit is specifically engineered for Isuzu 4BD1 diesel engines used in medium-duty excavators including Hitachi EX100, EX120, EX150 series, Kobelco SK100, SK120, and other construction machinery. Manufactured to meet or exceed OEM specifications, this comprehensive gasket set includes every sealing component needed for complete upper and lower engine overhaul, ensuring leak-free sealing and restored engine compression.
The kit features modern Metal / Multi-Layer Steel (MLS) construction, representing the latest advancement in gasket technology for 4BD1 engines. Unlike traditional asbestos or composite gaskets, MLS gaskets provide superior sealing performance under high compression, exceptional heat dissipation, and extended service life.
Engine Specifications
The Isuzu 4BD1 is a 3.9L (3856cc), inline 4-cylinder, 4-stroke, water-cooled diesel engine known for its robust cast iron construction, fuel efficiency, and legendary reliability in demanding excavator and industrial applications. This engine delivers approximately 70-90 HP depending on configuration.
Kit Contents
| Component |
Quantity |
Material / Remarks |
| Cylinder Head Gasket |
1 |
Multi-Layer Steel (MLS) / Stainless Steel (3-5 layers) |
| Exhaust Manifold Gasket |
1 |
Graphite with steel core |
| Intake Manifold Gasket |
1 |
Composite fiber |
| Valve Cover Gasket |
1 |
Silicone rubber |
| Oil Pan Gasket |
1 |
Rubber / cork blend |
| Front Timing Cover Gasket |
1 |
Fiber / paper |
| Rear Main Seal |
1 |
PTFE / nitrile rubber |
| Front Crankshaft Oil Seal |
1 |
Nitrile rubber |
| Turbocharger Gaskets (set) |
2 |
Metal / graphite (for 4BD1T turbo models) |
| Fuel Injection Pump Gasket |
1 |
Paper |
| Water Pump Gasket |
1 |
Fiber |
| Thermostat Housing Gasket |
1 |
Rubber |
| Valve Stem Seals |
8 |
Viton |
| Injector Seals (copper) |
4 |
Annealed copper |
| Rocker Cover Gasket |
1 |
Silicone rubber |
| Oil Cooler Gasket |
1 |
Rubber / fiber composite |
| O-Ring Assortment |
Set |
Various sizes (Viton / NBR) |
Note: Kit contents may vary slightly depending on engine configuration (naturally aspirated vs. turbocharged, mechanical injection) and application. Please verify your engine serial number before ordering.
Key Features
- Modern MLS Construction – Multi-Layer Steel cylinder head gasket provides superior sealing compared to original asbestos or composite materials
- OEM-Equivalent Quality – Strictly adheres to Isuzu dimensions and material standards, ensuring perfect fit and function
- Complete Overhaul Set – Includes all gaskets and seals for both upper and lower engine sections
- Superior Durability – MLS head gasket withstands extreme temperatures up to 1200°C and high cylinder pressures
- Precision Fit – Direct bolt-on replacement; no modifications needed
- Enhanced Heat Dissipation – Stainless steel layers conduct heat more effectively than asbestos
- Extended Service Life – MLS technology provides longer lifespan compared to traditional gasket materials
- Comprehensive Leak Protection – Ensures oil, coolant, and combustion gases remain perfectly sealed
Applications
Engine Models
Isuzu 4BD1, 4BD1T (Turbocharged) diesel engine (3.9L / 3856cc) – mechanical injection, direct injection
Excavators
- Hitachi EX100, EX100-2, EX100-3, EX120, EX120-2, EX120-3, EX150, EX150-2, EX150-3
- Kobelco SK100, SK100-II, SK100-III, SK120, SK120-II, SK120-III
- Sumitomo SH100, SH100-2, SH120, SH120-2
- JCB JS100, JS110, JS120
- Case CX100, CX120 (select models)
- Furukawa FL100, FL120
- Kato HD-450, HD-550, HD-700
- Mitsubishi MS100, MS120
Other Equipment
- Isuzu trucks: N series (NPR, NQR), F series (FSR, FTR, FVR) 1975-1985
- Wheel loaders
- Forklifts and material handling equipment
- Agricultural tractors
- Generator sets
- Industrial machinery
OEM Reference Numbers
5-11110-103-3, 5-11110-103-4, 5-87810-288-1, 5-87810-289-1, 5-87810-290-1, 8-97080-892-1, 8-97080-893-1, 1-87810-609-2, 1-87810-609-3, 8-97112-116-0
Why Choose Our Metal / MLS Gasket Kit?
Each kit undergoes rigorous quality checks to guarantee consistent performance and longevity. Gaskets are engineered using advanced material technology to deliver a sealing solution that outperforms original asbestos and standard aftermarket alternatives.
The MLS cylinder head gasket provides several advantages: superior sealing force with embossed bead design, perfect surface adaptation to minor irregularities, high temperature resistance up to 1200°C, and no retorquing required after installation.
For turbocharged 4BD1T applications operating at higher cylinder pressures and temperatures, this MLS gasket kit provides enhanced durability required for reliable long-term performance.
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