Searching for a reliable 4D31T cylinder head? Our ME999863 direct injection head features reinforced valve bridges to stop thermal cracking in Fuso trucks
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Searching for a reliable Mitsubishi 4D31 or 4D31T cylinder head? This premium direct-injection head (OEM: ME999863) is engineered with reinforced valve bridges to eliminate the thermal cracking common in high-output Fuso Canter trucks and Kobelco excavators. In stock for immediate global wholesale.
The Mitsubishi 4D31 and its turbocharged variant, the 4D31T, represent a significant leap in innovative driving technology, moving to a Direct Injection (DI) system for superior torque and fuel efficiency. These engines are the primary powerplants for legendary Fuso Canter logistics fleets and medium-duty Kobelco SK200-3 excavators. However, the higher cylinder pressures and heat generated by direct injection place immense stress on the cylinder head deck. Fleet managers frequently encounter fatal thermal fatigue cracking between the valve ports, which leads to compression loss and total engine downtime in demanding industrial environments.
Ruich Value has re-engineered the ME999863 cylinder head using high-density HT250-grade cast iron alloy to combat these specific DI engine pain points. Unlike standard aftermarket castings, our units feature strategically thickened valve bridges and optimized coolant passages to dissipate heat more effectively. By maintaining a precision deck flatness tolerance of ≤ 0.05 mm, we ensure a perfect seal with the head gasket even under maximum turbo boost. Whether you are overhauling a Kato HD512 excavator or a regional delivery fleet, our pressure-tested heads guarantee unyielding job-site reliability.
| OEM Part Number | ME999863 |
|---|---|
| Engine Compatibility | Mitsubishi 4D31, 4D31T (Direct Injection Diesel) |
| Head Assembly Type | Bare Cylinder Head Casting |
| Material Grade | High-Density Cast Iron (HT250 / G3000 Grade) |
| Valve Configuration | 8-Valve OHV (2 per cylinder) |
| Combustion System | Direct Injection (DI) – Flat Deck Design |
| Deck Flatness Tolerance | ≤ 0.05 mm |
| Quality Assurance | 3MPa Air & Water Pressure Tested |
| OEM Brand | Application Category | Known Compatible Models |
|---|---|---|
| Mitsubishi Fuso | Medium Logistics Trucks | Fuso Canter FE311, FE444, FG434 series |
| Kobelco | Heavy Excavators | SK200-3, SK200LC-3, SK220-3 (Early 4D31 models) |
| Kato / Tadano | Cranes & Excavators | Kato HD512, HD550-VII, Various Tadano Mobile Cranes |
From workhorse 4D31 cylinder heads to massive 6D24 crankshafts, Ruich Value is the global factory-direct source for premium aftermarket Mitsubishi engine components. Find the parts to complete your rebuilds below.
| Engine Model | OEM / AMC Number | Application (Vehicle & Equipment) |
|---|---|---|
| 4D30 / 4D30A | ME997041, ME012131 | Fuso Canter (3.3L Diesel), Old Canter FE Series |
| 4D31 | ME999863, ME017154 | Fuso Canter, Kato HD400 Excavator |
| 4D32 | ME997277, 22100-45101 | Fuso Canter FE335 (Direct Injection) |
| 4D33 | ME996449, ME997425 | Fuso Canter FE537, FE637 (4.2L) |
| 4D34 / 4D34T | ME997519, ME990753 | Fuso Canter FE449, Rosa Bus, Kobelco SK120 |
| 4D35 | ME202620 | Fuso Canter 4.6L |
| 4D56 (908 512) | MD185926, MD109736 | Protruding Valves: L200 K74, Pajero Sport (Early) |
| 4D56 (908 513) | MD348983, MD303750 | Recessed Valves: L200, Hyundai H100/H1 (D4BH) |
| 4D56U (16V) | 1005A560, 1005B453 | DOHC Common Rail: L200 Triton KA4T, Pajero Sport |
| 4DR7 | ME999127 | Mitsubishi Canter (Vintage), Jeep J54 |
| 4G63 / 4G64 (8V) | MD099086, MD305479 | Mitsubishi Forklift FG20/FG25, L300 Van, Delica |
| 4G54 / G54B | MD026520, MD311828 | Pajero V32, Forklift FG30 |
| 4M40 / 4M40T | ME202620, ME193804 | Pajero V46, Delica, Challenger, Canter (2.8L) |
| 4M41 | ME204200 (Old), 1005B341 (New) | Pajero V78 (3.2L DI-D), Triton ML/MN |
| 4M42 | ME204399, ME194151 | Fuso Canter FE7 (3.0L Common Rail) |
| S4S | 32A01-01010 | Mitsubishi Forklift FD30N, CAT Skid Steer |
| S6S | 32B01-01010 | Mitsubishi Forklift FD50, Hyundai Excavator R140 |
| 6D14 / 6D15 | ME031602, ME999602 | Fuso Fighter (Medium Duty), Kato/Tadano Cranes |
| 6D16 / 6D16T | ME997756, ME403382 | Fuso Fighter Truck, Kobelco SK330, Kato HD1430 |
| 6D22 / 6D22T | ME999664, ME051222 | Fuso Super Great, Kato NK-500E Crane |
| 6D34 | ME081734 | Fuso Fighter, Kobelco SK200-8 Excavator |
| 6G72 (V6) | MD307678 (L), MD307677 (R) | Pajero V43, V33 (3.0L V6 Petrol) |
Explore our full range of Mitsubishi Engine Parts.
The difference is critical: the 4D30 uses Indirect Injection (IDI) with swirl chambers, while the 4D31/4D31T uses Direct Injection (DI). The ME999863 (4D31) features a flat deck design where the fuel is injected directly into the piston bowl, requiring different port geometries and head gasket profiles. They are not interchangeable.
Heavy hydraulic loading in excavators forces the 4D31T turbo engine to run at high thermal peaks. The thin metal bridge between the valves expands and contracts under this heat. Our HT250-grade cast iron provides superior heat dissipation to resist this thermal fatigue and stop micro-cracking before it leads to compression loss.
For the Mitsubishi 4D31, the head bolts should be torqued in the factory sequence to 115-125 Nm (85-92 ft-lb). Because these engines often operate in heavy-duty commercial roles, we strongly advise using brand-new head bolts and a high-quality multi-layer steel (MLS) gasket to ensure permanent clamping force.
This specific SKU is for a bare cylinder head casting. This allows you to transfer your existing 4D31 valves and springs if they are within spec, or to install new high-performance components. We do offer complete assemblies (including valves, springs, and seals) under a different part suffix if required for rapid fleet turnaround.
Keep your heavy equipment and logistics fleets operational with engine parts engineered for unyielding durability. Contact Ruich Value today for factory-direct pricing on Mitsubishi 4D31 components.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business