MITSUBISHI FUSO 4M50 Front Engine Mount - Inertial Axis Supporting Type with

The Engine Mounting with OEM reference number MK381919 is a verified direct-fit replacement for the MITSUBISHI FUSO Canter series of light- and medium-duty trucks equipped with the 4M50 4.9L diesel engine. This front engine mount is a critical component of the engine support system, designed to securely position the engine within the chassis while absorbing and dampening vibrations produced during operation.

The engine mount features an inertial axis supporting type design, a proven technology used across many Mitsubishi vehicles that supports the front upper part of the engine. This advanced mounting system incorporates a pressurized liquid-filled cylindrical mount, specifically engineered to reduce vibration during acceleration and cornering, while the refined insulator design significantly improves riding comfort. By maintaining proper engine alignment and isolation, this mount prevents excessive movement that could damage surrounding components, ensures smooth power delivery, and extends the service life of the drivetrain.

A deteriorated or failed engine mount can cause excessive engine movement, clunking noises during gear changes or acceleration, increased vibration felt through the steering wheel and cabin, premature wear on drivetrain components, and potential damage to cooling system hoses and electrical connections. This OE-spec replacement mount restores factory engine positioning and ride refinement for your FUSO truck.

Compatible MITSUBISHI FUSO Canter Models (non-exhaustive)

4M50 Engine Variants:

• 4M50-3AT7 - 4-cylinder, DOHC, turbocharged, air-to-air intercooled diesel
• 4M50-3AT8 - 4-cylinder, DOHC, turbocharged, air-to-air intercooled diesel
• 4M50-4A14 - 4-stroke cycle, water-cooled direct injection diesel with glow plugs
• 4M50(T3) - 103kW (140PS) output

Common Failure Symptoms:

• Excessive engine movement during acceleration or gear changes
• Clunking or knocking noises from the engine bay
• Increased vibration felt through the steering wheel or cabin floor
• Premature wear on drivetrain components (axles, transmission)
• Visible cracking, tearing, or separation of rubber from metal

Installation Guidelines (Reference MITSUBISHI FUSO workshop manual for complete steps):

1. Safely lift and support the vehicle
2. Install special tools MB991453 and MZ203827 to the vehicle body to support the engine and transaxle assembly
3. Remove the center member and rear roll stopper bracket
4. Support the engine with a suitable jack or hoist
5. Remove the old engine mount mounting bolts
6. Carefully remove the old mount from the vehicle
7. Compare the new mount with the old unit - verify bolt hole alignment and mounting points match
8. Install the new engine mount into position
9. Torque all mounting bolts to manufacturer specifiion (consult workshop manual for specific values)
10. Remove the engine support tools
11. Reinstall the center member and roll stopper bracket
12. Lower the vehicle and perform a road test to verify proper operation

Post-installation Checks:

• Verify no abnormal noise or excessive vibration during idle and acceleration
• Check for correct engine alignment - no visible tilt or sag
• Re-torque mounting bolts after 100-200 km of driving (if specified by manufacturer)

Maintenance Schedule:

• Inspect engine mounts during every routine service
• Replace engine mounts in pairs or as a complete set for balanced vibration isolation
• If one engine mount has failed, inspect the opposite mount and transmission mounts as well

• Individually sealed in protective packaging
• Packed in foam-lined carton (branded or plain)
• Bulk wholesale available in master cartons
• Suitable for: MITSUBISHI FUSO specialist repair shops, truck fleet maintenance depots, commercial vehicle parts distributors