Solve main journal wear in your 4G64 engine. This MD376961 forged crankshaft provides a durable solution for both Mitsubishi forklifts and passenger cars
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Solve chronic main journal wear in your Mitsubishi 4G64 engine with this premium forged steel crankshaft (OEM: MD376961). It’s engineered to restore oil pressure and prevent snout damage in demanding applications like TCM forklifts and Mitsubishi Delica vans. In stock for global fleet supply.
The Mitsubishi 4G64 “Sirius” engine is one of the most versatile 4-cylinder platforms ever produced, a testament to Mitsubishi’s innovative engineering. Its legacy spans from powering rugged TCM forklift fleets and spacious Delica vans to serving as the base for numerous passenger vehicles across several brands. However, this versatility means it operates under widely different conditions, and one common failure point has emerged: severe main journal wear. In high-hour industrial equipment, this is often triggered by oil pump degradation, leading to a critical loss of oil pressure that quickly destroys bearings and scores the crank journals.
The Ruich Value MD376961 crankshaft is a purpose-built solution to this widespread pain point. Moving beyond standard cast materials, we utilize high-tensile forged 42CrMo steel to create a significantly more durable foundation. All main and rod journals are then nitrided to HRC 50-55 hardness and precision-polished to an exact Ra finish. This superior surface metallurgy ensures maximum resistance to abrasive wear, even in momentary low-pressure situations, restoring the engine’s rotating assembly to better-than-factory strength and guaranteeing long-term operational reliability for your fleet.
| Product Name | Engine Crankshaft Assembly |
|---|---|
| OEM Part Number | MD376961 |
| Cross Reference | MD134575, 23111-38000 (Hyundai G4JS) |
| Engine Platform | Mitsubishi 4G64 (2.4L SOHC 8V & 16V variants) |
| Material | High-Tensile Forged Steel Alloy (42CrMo) |
| Surface Hardness | Nitrided Journals (HRC 50-55) |
| Application Category | OEM Brand | Known Compatible Models |
|---|---|---|
| Industrial / Forklift | Mitsubishi | FG35, FG40 |
| TCM | FHG30, FG30N | |
| Automotive | Mitsubishi | Galant, Space Wagon, Delica, L200, Eclipse |
| Hyundai / Kia | Sonata, Santa Fe (as G4JS engine) | |
| Great Wall / Chery | Hover, Tiggo (Sirius-based models) |
From the industrial 4G63 to the heavy-duty 6D22, Ruich Value is your global partner for premium aftermarket Mitsubishi engine components. Find the parts to complete your engine rebuilds below.
| Engine Model | Main Application |
|---|---|
| S4Q | Mitsubishi Forklift, Mini Excavator, Caterpillar |
| 4D30 / 4D31 (6 Holes) | Fuso Canter, Rosa Bus |
| 4D32 (9 holes) | Fuso Canter |
| 4D33 / 4D34 | Fuso Canter FE Series, Rosa Bus |
| 4D35 | Fuso Canter |
| 4D55 | Older L200, Pajero |
| 4D56 / D4BA | L200, Pajero, Hyundai H1/H100, Delica |
| 4D56T / 4D56U | L200 Triton, Pajero Sport (Common Rail) |
| 4DR5 | Mitsubishi Jeep, Canter |
| 4G15 / 4G13 | Mitsubishi Lancer, Colt, Mirage |
| 4G54 | Pajero, Forklift, Mazda B2600 |
| 4G63 | Mitsubishi Forklift (FG25), Galant, L300 |
| 4G64 | Mitsubishi Forklift (FG25), Galant, L300 |
| 4M40 | Pajero, Delica, Triton |
| S4S | Mitsubishi Forklift, Clark, TCM Forklift |
| S6KT | CAT 320 Excavator (Rebadged 6D16) |
| S4E / S4E2 | Forklift, Marine Engine |
| S4F | Agriculture, Tractor |
| S4K | CAT Excavator (E120B), Mitsubishi |
| S6K | CAT Excavator (E200B), Mitsubishi |
| S6S | Forklift (FD35), Excavator |
| 6D14 / 6D15 | Fuso Fighter, Kato/Kobelco Excavator |
| 6D16 / 6D16T | Fuso Fighter, Kobelco SK330 |
| 6D17 | Fuso Fighter (Late model) |
| 6D31 / 6D31T | Fuso FK, Excavators |
| 6D34 / 6D34T | Fuso Fighter, Construction |
| 6D22 / 6D20 / 6D24 | Fuso Super Great, Heavy Excavator |
| 6D40 | Fuso Super Great (Heavy Truck) |
| 8DC91 / 8DC92 | Fuso Super Great, Heavy Dump Truck |
| 8DC11 / 8DC82 | Fuso Heavy Duty Truck |
| 6G72 | Pajero V6, Montero |
| 6DB1 / 6DB10 | Older Fuso Truck |
| 6M70 | Fuso Super Great (Common Rail) |
| 8PC1 / 8PE1 | Fuso Bus, Heavy Truck |
Explore our full range of Mitsubishi Engine Parts.
Yes, in most cases. The Hyundai G4JS engine is a license-built version of the Mitsubishi 4G64. This crankshaft crosses directly with Hyundai OEM part number 23111-38000. However, always verify your specific engine code and production year, as minor variations can exist.
The most frequent failure is severe main journal wear leading to low oil pressure. This is typically initiated by a worn-out oil pump that can no longer supply adequate volume at high temperatures and RPMs. Replacing the oil pump is mandatory when installing a new crankshaft in a 4G64 industrial engine.
For most industrial and early automotive applications, the core crankshaft profile (MD376961) is the same for both SOHC 8-valve and 16-valve versions. However, balancing and snout design can vary for specific high-performance or late-model GDI versions. This part is confirmed for the vast majority of standard forklift and passenger car applications.
Beyond replacing bearings, seals, and the oil pump, it is crucial to inspect the harmonic balancer for any signs of rubber degradation or wobble. A faulty balancer will quickly destroy the front journal and keyway. Also, ensure you use the correct main cap bolt torque specification for your specific block (automotive vs. industrial).
From forklift fleets to automotive engine rebuilders, Ruich Value provides durable, precision-engineered components. Contact us for direct wholesale pricing and international shipping solutions.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business
