Engine Mercedes OM501LA

Engine Mercedes OM501LA

The OM501LA engine is a special development of the plant engineers who equipped their flagship Mercedes Actros trucks with them. The main features of the 501 diesel engine are high power output with low fuel consumption. With six cylinders, the internal combustion engine is characterized by increased reliability and a long period between scheduled maintenance.

The Mercedes OM501LA engine has 6 cylinders with a V-arrangement. Its main purpose is to be installed on medium-duty trucks. The engine displacement is 11.9 liters and the cooling system is water-based.


Manufacturer Daimler Chrysler
Also called OM 501
Start of production 1996
Configuration V supercharged turbocharger
Number of cylinders 6
Piston stroke, mm 150
Cylinder bore, mm 130
Displacement, cc 11946
Power output, hp 313-428
Torque output, Nm / rpm 1850/1080
Euro standards Euro 3
Weight, kg 885
Fuel consumption, L/100 km
— at 60 km/hour
— at 80 km/hour
Engine oil capacity, liter 28-34
Engine lifespan, km
— official information
1 000

The following modifications of this power unit are produced in the basic factory configuration:

  • OM 541.926 and OM 541.920 – an engine with a power of 313 hp, which is intended for completing trucks of relatively low carrying capacity and operating on short and medium flights;
  • OM 541.922 – 354 hp engine to complete trucks operating in a wide variety of conditions;
  • OM 541.923 – 394 hp engine and the lowest fuel consumption among the 501 series power units;
  • OM 541.921 and OM 541.925 – the engine with the highest power rating in the 501 series at 428 hp

Mercedes OM501LA
One of the features of the OM501 series motors is the Telligent electronic system. It ensures optimal distribution and adaptation of injection timing and pressure to specific engine load parameters. At the same time, the system independently determines the parameters for each cylinder separately, which has a positive effect on fuel consumption and the amount of harmful emissions.

The technological solutions of the Mercedes OM 501LA engines, together with the Telligent system, ensure the comfort of driving the truck and an instant response to the pedal command.

Explanation of marking OM501LA

OM Heavy Fuel Oil (Diesel) ICE
501 Engine type: 6-cylinder V-arrangement.
L Charge air cooling.
A outlet turbocharger.

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