The 2.4-liter Mitsubishi 4B12 engine is an impressive feat of Japanese engineering that has been produced by the company since 2006, making it one of their staple and most popular products. Installed in models such as the Outlander, Lancer and Delica, this unit was created through an alliance among different automakers and shares similarities with models from Chrysler and Hyundai such as the ED3 and G4KC/G4KE models respectively. The 4B1 family encompasses other engine variants such as the 4B10, 4B11, and 4B11T which have also provided reliable performance over the years and are seen as hallmark of Mitsubishi automobile engineering excellence.
Engine specifications for Mitsubishi 4B12 2.4 l
| Configuration | Inline |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Displacement | 2359 cc |
| Cylinder diameter | 88 mm |
| Stroke | 97 mm |
| Power system | Distributor Injection System |
| Engine power | 165 – 170 hp |
| Torque | 222 – 232 Nm |
| Compression ratio | 10.5 |
| Fuel type | Regular |
| Euro class | EURO 4/5 |
The dry weight of the 4B12 engine is 136 kg
Information
In 2002, the Global Engine Manufacturing Alliance was formed by Hyundai-Kia, Mitsubishi and Chrysler. The first engines of this collaboration were released in 2004 with production beginning two years later in 2006. This 2.4-liter gasoline engine 4B12 model shares design features such as distributed fuel injection and aluminum 16 valve cylinder head without hydro compensators along with many other unique elements like a chain driven timing system called MIVEC which has phasing units on both intake shafts to reduce vibration resulting from an oil pump balancer unit combined together for further improvement leading to their newer generation index under the name 4J12.
Fuel consumption двс 4В12
The example (l/100km) of a 2008 Mitsubishi Outlander with a manual transmission:
| City | 12.6 l |
| Highway | 7.6 l |
| Combined | 9.4 l |
What cars have the engine Mitsubishi 4B12
The Mitsubishi 4B12 is an engine found in a selection of vehicles from Mitsubishi Motors. It is typically seen in the models Lancer, Outlander and ASX, although other versions may also be available depending on the year and country of origin. The Mitsubishi 4B12’s strong but reliable design makes for great fuel economy and dependable performance no matter what type of terrain you might be driving on. Moreover, its power output is impressive for its size – it can generate up to 155 hp and torque levels ranging between 148-148 Nm with the right combination of parts. All this goes to show why the Mitsubishi 4B12 engine is so popular among drivers who are looking for a reliable engine without having to compromise on power.
| Delica D:5 (CV) | 2007 – … |
| Lancer 10 (CY) | 2007 – 2017 |
| Outlander 2 (CW) | 2006 – 2012 |
| Outlander 3 (GF) | 2012 – … |
| C-Crosser I (EP) | 2007 – 2012 |
| 4007 I (I3) | 2007 – 2012 |
Reviews on the engine 4B12
Advantages:
- Simple and reliable motor design
- Takes our 92 gasoline normally
- No problems with service or spare parts
- The car with this engine is valued at the secondary market
Disadvantages:
- Owners complain about noisy operation
- After 200,000 km oil is frequently consumed
- The exhaust manifold often cracks
- And there are no hydro-compensators
Engine 4B12 2.4 l maintenance schedule
| Interval | Every 15 000 km |
| Oil capacity | 5.2 l |
| Need to change | 4.6 l |
| Type of oil | 5W-30, 5W-40 |
| Timing Chain Type | Timing Chain |
| Service life | not limited |
| In practice | 150 000 km |
| At breakage/trans-skip | Bending of valves |
| Re-adjustment | Every 90 000 km |
| Intake | 0.17 – 0.23 mm |
| Exhaust | 0.27 – 0.33 mm |
| Oil filter | 15 000 km |
| Air filter | 30 000 km |
| Fuel filter | 60 000 km |
| Spark plugs | 30 000 km |
| Drive belt | 60 000 km |
| Coolant | 4 years or 60 000 km |
Problems
Oil consumption
This is a virtually trouble-free engine, but at high mileage it is prone to oil consumption due to heavy wear of the valve seats and guides or lodged piston rings. There’s also an open-jacketed aluminum block and the cylinders are simply elliptical.
Timing chain stretching
Another common problem is timing chain stretching after 150,000 km. The replacement procedure is uncomplicated and inexpensive, but quite often you can also encounter severe wear on the phasor sprockets, but they cost quite a bit.
Other disadvantages
On the profile forum, owners often complain about noisy engine operation, grease leaks, regular burnout of the intake tube ring or cracking of the exhaust manifold. Also, don’t forget to adjust valve clearances, as there are no hydro-compensators.
The manufacturer says the engine life of 4B12 is 200 000 km, but it can go up to 350 000 km.
Price of the used Mitsubishi 4B12
Price: $900 – $2000
A Mitsubishi 4B12 offers exceptional value for money, whether purchased new or used. While you may expect to pay more for a new model, you can find great deals on used Mitsubishi 4B12s with lower mileage and still in good condition. Shopping around for the best price is always recommended when looking into any major purchase, and the Mitsubishi 4B12 is no exception. If you want to ensure your purchase meets all safety standards then it’s probably best to opt for a new model, however if you’re comfortable with a pre-owned vehicle, then the savings of purchasing a used version can be significant.
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