Since 1999, the company has produced the 3.2-liter Mitsubishi 4M41 diesel engine, which powers popular Pajero SUVs like the Sport model. The motor was initially outfitted with a distribution pump; Common Rail has only been installed since 2006.
The 4M41 is a turbocharged engine that has an MHI air blower installed. Its torque is 351 Nm, its power is 165 horsepower, and its environmental performance is better than that of its predecessor, the 4M40.
A modernized Common Rail engine has been in production since 2006. IHI variable geometry was adopted by the turbine. The EGR system has been enhanced, a new intake manifold with swirl phases has been installed, and the intake ports have been upgraded. As a result, the ecological class, power, and torque could all be increased to 175 horsepower and 382 Nm, respectively.
Four more years later, the engine underwent yet another modification. 200 horsepower and 441 Nm of torque were added.
The engine was mounted on:
- Mitsubishi Pajero 3 (V70) in 1999 – 2006;
- Mitsubishi Pajero 4 (V90) since 2006;
- Mitsubishi Pajero Sport 2 (KH) in 2008 – 2016;
- Mitsubishi L200 4 (KB) in 2005 – 2014.
Specifications
| Production years | since 1999 |
| Displacement, cc | 3200 |
| Fuel system | direct injection (4M41T Direct Injection) Common Rail (4M41T Common Rail) |
| Power output, hp | 165/4000 rpm (4M41T DI) 175/3800 rpm (4M41T CR) 200/3800 rpm (4M41T CR 2010) |
| Torque output, Nm | 351/2000 rpm (4M41T DI) 382/2000 rpm (4M41T CR) 441/2000 rpm (4M41T CR 2010) |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 98.5 |
| Piston stroke, mm | 105 |
| Compression ratio | 17 (4M41T DI) 16 – 17 (4M41T CR) |
| Features | intercooler |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | MHI TF035HL (4M41T DI) IHI RHV5S VGT (4M41T CR) |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 9.3 |
| Fuel type | diesel |
| Euro standards | EURO 3/4 (4M41T DI) EURO 4/5 (4M41T CR) |
| Fuel consumption, L/100 km (for Mitsubishi Pajero 2015) — city — highway — combined |
11.8 8.0 8.9 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 245 |
Disadvantages of the Mitsubishi 4M41 engine
The high pressure fuel pump frequently failed and the pistons burned out in the early iterations of the engine without Common Rail;
The updated version is now practically inconsequential and much more dependable;
Even at low mileage, a crankshaft pulley with a rubber clutch may disintegrate;
Every 50,000 kilometers, the alternator belt needs to be tightened and the EGR needs to be cleaned. The timing chain stretches and rings loudly after 200–250 thousand kilometers.