Prevent deck warping in your 4M40 Pajero with our ME202621 cylinder head. This reinforced aluminum casting cures overheating issues for Triton MK fleets. Wholesale supply.
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Searching for a warp-resistant Mitsubishi 4M40 cylinder head? This premium 2.8L assembly (OEM: ME202621 / AMC 908 514) is manufactured from high-density gravity-cast aluminum to permanently solve deck distortion and swirl chamber cracking. It provides a definitive replacement for Mitsubishi Pajero V46, Triton MK, and Delica L400 fleets. In stock for immediate global wholesale.
The Mitsubishi 4M40 and its turbocharged 4M40-T variant are legendary powerplants in the 2.8-liter diesel category, powering iconic vehicles like the Pajero V46 and the robust Triton pickup. Known for innovative engineering and performance heritage, the 4M40 utilized a sophisticated Indirect Injection (IDI) system and a timing chain-driven SOHC configuration to deliver massive low-end torque. However, the aluminum alloy construction of the cylinder head, while excellent for weight saving, creates a specific technical pain point: extreme sensitivity to thermal cycles. In high-mileage fleets or heavy off-road use, any cooling system degradation quickly leads to deck warping and micro-cracking between the valve seats and swirl chambers, resulting in head gasket blowout and compression failure.
Ruich Value provides the ultimate metallurgical upgrade for these high-stress environments. Our ME202621 replacement cylinder heads are gravity-cast using premium-grade aluminum alloy with enhanced thermal density. Unlike standard aftermarket castings, we’ve strategically reinforced the walls around the pre-combustion chambers to resist the expansion cycles that cause cracking. With a precision-ground deck flatness tolerance of ≤ 0.05 mm and mandatory 3MPa air/water pressure testing, our cylinder heads ensure a permanent head-to-block seal. Whether you are maintaining a delivery fleet of Delica L400s or restoring a classic Pajero, our components deliver unyielding job-site reliability.
| OEM Part Number | ME202621 / ME202620 |
|---|---|
| Engine Compatibility | Mitsubishi 4M40, 4M40-T (2.8L SOHC Diesel) |
| Head Assembly Type | Bare Cylinder Head Casting |
| Material Grade | Gravity-Cast High-Density Aluminum Alloy |
| Valve Configuration | 8-Valve SOHC (2 per cylinder) |
| Combustion System | Indirect Injection (IDI) with Swirl Chambers |
| Deck Flatness Tolerance | ≤ 0.05 mm |
| Quality Assurance | 3MPa Air & Water Pressure Tested |
| OEM Brand | Application Category | Known Compatible Models |
|---|---|---|
| Mitsubishi | Pajero / Montero | Pajero V26, V46 Series (1994–2000) |
| Mitsubishi | L200 Triton | Triton MK Series, L200 Strada |
| Mitsubishi | Delica / L400 | Delica Space Gear, Starwagon, L400 Cargo |
| Mitsubishi | Shogun | Shogun Sport 2.8L (UK/European Models) |
From the versatile 4M40 to the heavy-duty 6D24, Ruich Value is your global partner for premium aftermarket Mitsubishi engine components. Find the parts to complete your engine 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) |
Discover our entire range in the Mitsubishi Parts Hub.
The 4M40 is an Indirect Injection (IDI) engine, which means the pre-combustion swirl chambers reach extremely high temperatures. Because the cylinder head is aluminum, it expands significantly more than the iron block. If the cooling system is not 100% efficient, the head deck will warp, pulling the head away from the gasket. Our heads utilize high-density gravity casting to minimize this thermal movement.
No, they are completely different and not interchangeable. The 4M40 is a larger 2.8L engine with a timing chain, whereas the 4D56 is a 2.5L engine with a timing belt. The block bolt patterns, port locations, and dimensions are entirely distinct.
The Mitsubishi 4M40 uses torque-to-yield head bolts. The sequence involves an initial torque to 100 Nm, then fully loosening them, followed by 50 Nm, and finally two 90-degree turns. Because the bolts stretch permanently, reusing old bolts will result in improper clamping force and guaranteed head gasket failure. Always install new bolts.
This specific SKU (ME202621) is for the bare cylinder head casting. Depending on your fleet’s needs, you can transfer your existing swirl chambers if they are crack-free, or we can supply a complete head assembly with chambers, valves, and springs pre-installed for rapid vehicle turnaround.
Partner with Ruich Value to secure reliable, factory-direct aftermarket engine components for your Pajero and Triton fleets. Contact our global export team today for direct pricing and global shipping solutions.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business