Engine Mercedes OM904LA

The OM904LA engines of the German company Mercedes are power units designed for Mercedes-Benz Atego trucks, the carrying capacity of which ranges from 6.5 to 15 tons. Motors of this modification fully satisfy the operational needs in terms of power and economy.

The engines are equipped with four in-line cylinders with a total volume of 4.25 liters. Power in various modifications ranges from 102 to 177 hp. In comparison with analogs, these ICEs, with an excellent ratio of volume and power, provide lower fuel consumption and high traction characteristics.

OM904LA engine manual
(PDF, 1.8 mb)

Specifications

Also called OM 904 LA
Power output 102 – 152 hp (2200 rpm)
Torque output 520 Nm (1200-1600 rpm)
Displacement, cc 4249
Number of cylinders 4
Number of valves 12
Manufacturer Mercedes
Compression ratio 17.4 to 1
Cylinder bore 102
Piston stroke 130
Displacement 61.05 cc
Power Index 36 hp for 1 liter (1000 cc)
Weight 395 kg.

Modernization 2004-2006 affected the environmental parameters of the series, bringing it closer to the requirements of Euro 4-5. Increased torque at the same speed and power of the motors. Supercharging with pre-air cooling is used, BlueTec technology is introduced. Emissions have dropped dramatically – up to 80%, while the power is not affected, and the savings are even more noticeable.

The most modern versions meet the requirements of Euro-6, being the leaders in the class. And the changes in the sensitivity of the motor were noticeably reflected in the ride quality. This is especially evident on difficult sections, ascents, with frequent stops and movement in dense traffic.

Engine Modifications

  • OM 904.904 75kW (102hp), release 3/1996, for MB series 810, 812, 814, 815;
  • OM 904.905 90kW (122hp), release 3/1996, for MB series 811, 71;
  • OM 904.906, 100kW (136hp), release 3/1996, for MB series 1114, 1117, 814, 914, 917, Vario 814 D 4.2;
  • OM 904.907, 125kW (170hp), release 3/1996, for models MB series 1317, 1517, 1114, 1117, 817, 914, 917;
  • OM 904.908 100kW (136hp), manufactured 9/1996, for models MB Vario 612 D 4.2, 614, 615, 810, 812, 814, 815, O 814;
  • OM 904.909 90kW (122hp), release 1/1998, for models MB Atego 712, 715, 812, 815, 817;
  • OM 904.910 100kW (136hp), release 1/1998, for models MB Atego 1214, 1215, 1217, 1223, 1228, 712, 714, 814, 815, 817, 823;
  • OM 904.911 125kW (170hp), release 1/1998, for MB Atego 1017, 1217, 1317, 1517, 717, 817, 917;
  • OM 904.912 118kW (134hp), for MB series 1618, 1418, 1218;
  • OM 904.914 100kW (136hp), for MB series 814;
  • OM 904.915 90kW (122hp), for MB series 812, 712;
  • OM 904.916 with a capacity of 100kW (136hp), for models MB series 1214, 1015, 1018, 1023, 814, 714;
  • OM 904.917 125kW (170hp), for models MB series 1317, 1517, 1217, 1017, 817, 917;
  • OM 904.918 90kW (122hp), for models MB Atego 712, 812, LK / LN2 711, 811;
  • OM 904.919 with a capacity of 100kW (136hp), for models MB Atego 714, Vario 812, LK / LN2 814;
  • OM 904.920 with a capacity of 125kW (170hp), for models MB Atego 1017, 1217, 1317, 1517, 717, 917, LK / LN2 1117, LK / LN2 1317, LK / LN2 817, LK / LN2 917;
  • OM 904.921 112kW (152hp), manufactured 3/1998, for MB Atego 814;
  • OM 904.922 112kW (152hp), release 1/1998, for models MB Atego 1215, 1217, 1223, 1228, 712, 715, 812, 815, 817, 823;
  • OM 904.923, 112kW (152hp), release 1/1996, for MB series 810, 814, 815, 612, 614, 615, Vario 615 D 4.2, 814, 815;
  • OM 904.924 100kW (136hp), for MB series 914 models;
  • OM 904.925 with a capacity of 112kW (152hp), for models MB series 1215, 1115;
  • OM 904.926 113kW (154hp), for models MB Atego 1215, 715, 815, Vario 615 D 4.2, 812, 815;
  • OM 904.927 110kW (150hp) output 4/2000, for models MB U 300, U 400;
  • OM 904.928, 125kW (170hp) output 4/2000, for models MB U 300, U 400;
  • OM 904.929 125kW (170hp), for MB Cito O 520 models;
  • OM 904.930 100kW (136hp), for models MB Atego 714, Vario 814 D 4.2, LK / LN2 814;
  • OM 904.931 135kW (184hp), for models MB U 400, Cito O 520;
  • OM 904.932 142kW (190hp);
  • OM 904.933 with a capacity of 128kW (170hp), for models MB U 300, U 3000, U 400, Cito O 520;
  • OM 904.934 134kW (180hp);
  • OM 904.935 134kW (180hp);
  • OM 904.936 110kW (150hp), for MB series 815, 615;
  • OM 904.937 142kW (190hp);
  • OM 904.938 125kW (170hp), for MB series 1718, 1618, 1418, 1218;
  • OM 904.939, 125kW (170hp), for models MB U 300, U 3000, U 400, Cito O 520;
  • OM 904.940, 113kW (150hp), for MB Freightliner (USA) models;
  • OM 904.941 112kW (152hp), for models MB Atego 1215, 715, 815, Vario 615 D 4.2, 812, 815;
  • OM 904.942 130kW (177hp), for MB Cito O 520 models;
  • OM 904.943 112kW (152hp) for MB Series 915;
  • OM 904.944 90 kW (122 HP), for models MB Atego 712, 812, LK / LN2 711;
  • OM 904.945 125kW (170hp) for MB Series 1417;
  • OM 904.946 with a capacity of 90-110kW (122-150hp), for models MB UNIMOG-U 300, Atego 712, 714, Vario 614 D 4.2, 812, 814, LK / LN2 711, 811;
  • OM 904.947 130kW (177hp), for MB UNIMOG-U 300, U 3000, U 400, Cito O 520;
  • OM 904.948 113kW (154hp) for MB Series 815;
  • OM 904.949 125kW (170hp) for MB Series 1317, 917;
  • OM 904.950 with a capacity of 90-110kW (122-150hp), for models MB UNIMOG-U 300, Atego 712, 714, 812, Vario 614 D 4.2, 812, LK / LN2 711, LK / LN2 814;
  • OM 904.951 130kW (177hp), for MB UNIMOG – U 400, Cito O 520;
  • OM 904.953 110kW (150hp), for MB UNIMOG – U 3000;
  • OM 904.954 with a capacity of 128kW (170hp), for the MB UNIMOG models – U 300, U 3000, U 400, Cito O 520;
  • OM 904.955 100kW (136hp), for MB UNIMOG – U 300;
  • OM 904.956 142kW (190hp);
  • OM 904.957 110kW (150hp), for MB UNIMOG – U 300, U 3000;
  • OM 904.958 130kW (177hp);
  • OM 904.959 with a capacity of 128kW (170hp), for MB UNIMOG models – U 300, U 3000;
  • OM 904.960 with a capacity of 100kW (136hp);
  • OM 904.961 90kW (122hp), for models MB Atego 712, 812, LK / LN2 711, 811;
  • OM 904.962 130kW (177hp), for MB UNIMOG – U 300, U 3000, U 400;
  • OM 904.964 130kW (177hp), for MB UNIMOG – U 300, U 3000, U 400;
  • OM 904.965 110kW (150hp), for MB UNIMOG – U 300;
  • OM 904.966 110kW (150hp), for MB UNIMOG models – U 300, U 3000;
  • OM 904.967 130kW (177hp), for models MB Atego 1017, 1217, 1317, 1517, 717, 817, LK / LN2 1117, 1317, 1517, 817, 917;
  • OM 904.968 130kW (177hp), for MB UNIMOG – U 300, U 3000, U 400;
  • OM 904.969 with a capacity of 100kW (136hp);
  • OM 904.970 110kW (150hp);
  • OM 904.972 with a capacity of 130kW (177hp);
  • OM 904.974 with a capacity of 125kW (170hp);
  • OM 904.975 with a capacity of 75-110kW (102-150hp);
  • OM 904.975 with a capacity of 75-110kW (102-150hp).

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