4B12 engine — CW 2.4 (2.4L)
2.4L · 170 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | 4B12 |
| Capacity | 2360 cc |
| Idle speed | 680 ± 100 rpm |
| Automatic | 750 ± 100 rpm |
| Inlet | 0.20 mm |
| Exhaust | 0.30 mm |
| Normal | 14.4 bar |
| Minimum | 10 bar |
| Differential limit between cylinders | < 1.0 bar |
| Oil pressure | 2.9-6.9 / 3500 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Mitsubishi Electric MPI |
| Number of cylinders | 4 |
| Firing order | 1 - 3 - 4 - 2 |
| Spark plugs (make and type) | NGK K16PSR B8 Champion REC9YCL |
| Injection pressure/system pressure | 3.5 bar |
| Lambda | 0.97 – 1.03 |
| CO at fast-idle speed | < 0.3 % |
Cooling system
| Cap pressure | 0.93 - 1.23 bar |
| Thermostat opens at | 82 °C |
Electrical
| Battery | 91 Ah |
| Alternator | 120 A |
Capacities
| Engine sump, incl. filter | 4.6 l |
| Gearbox refill | 2.5 l |
| Differential, 4WD rear | 0.55 l |
| Cooling system | 7.0 l |
| Power steering | 1.0 l |
| Air-conditioner refrigerant | 500 g |
| Air-conditioner compressor oil | 80 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 35 ± 2 Nm |
| Cylinder head bolts — Stage 2 | 90 ° |
| Cylinder head bolts — Stage 3 | 90 ° |
| Spark plugs | 24 ± 3 Nm |
| Manual transmission drain plug | 13 ± 5 Nm |
| Automatic transmission drain plug | 34 ± 4 Nm |
| Oil plug | 39 ± 5 Nm |
| Wheel nuts | 89 ± 10 Nm |
| Front hub | 245 ± 29 Nm |
| Rear hub | 175 ± 25 Nm |
| Rear hub | 245 ± 29 Nm |
Emissions
| Emission code | 70/220*2003/76B |
| Emission standard | Euro 4 |
| CO2 average | 224 g/km |
| CO | 0.552 g/km |
| HC | 0.035 g/km |
| NOx | 0.013 g/km |
| CO2 average | 216 - 222 g/km |
| CO | 0.464 g/km |
| HC | 0.060 g/km |
| NOx | 0.016 g/km |
| CO2 average | 213 - 220 g/km |
| CO2 average | 224 - 225 g/km |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.