Engine Mercedes OM470

Engine Mercedes OM470

The OM470 engine is a refrigerant cooled 4-stroke direct injection diesel engine. The engine is equipped with a common rail diesel injection system, cooled and regulated exhaust gas recirculation, and turbocharging with boost pressure control. Single-stage charging is carried out via an exhaust-gas turbocharger. The valve drive has 2 gear-driven overhead camshafts.

The engine has a one-piece cylinder head. The cylinder head contains 2 intake valves and 2 exhaust valves per cylinder. The valves are symmetrical. The symmetrical valve arrangement is optimal for fuel combustion.


Manufacturer Daimler Chrysler
Also called OM 470
Production years 2003
Cylinder block alloy cast iron
Fuel system direct injection
Configuration inline
Number of cylinders 6
Piston stroke, mm 145
Cylinder bore, mm 125
Compression ratio 18.5
Displacement, cc 10700
Power output, hp 326/1700
Torque output, Nm / rpm 1700-2200/1300
Fuel type diesel
Euro standards Euro 6
Weight, kg 956 (dry)
Dimensions, mm
— length
— width
— height
Firing order 1-5-3-6-2-4
Max. engine operating temperature, degrees 110
Engine lifespan, thousand km
— official information
1 000

Mercedes OM470Fuel equipment – Common Rail, but with a maximum spray pressure increased to 2700 bar. This is what Daimler calls the X-Pulse. The engines are only in the Euro-6 version, therefore, SCR urea neutralization, EGR recirculation and a regenerable particulate filter are combined here.

The engine has a common rail diesel injection system with increased pressure – the so-called Amplified Pressure Common Rail System (APCRS). This system minimizes the amount of fuel required for combustion. The advantage of this system is the presence of a relatively low pressure both in the rail itself and in the high pressure lines.

Explanation of OM470LA marking

OM Heavy Fuel Oil (Diesel) ICE
470 Engine type: 6-cylinder in-line.

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