The Mercedes-Benz OM 444 LA engine has been widely used in various applications, including:
The OM 444 LA is a dying breed. It does not require a laptop to diagnose. It does not have a DPF or SCR. It responds to a wrench, a stethoscope, and the human ear.
: The engine includes protection systems to handle high-stress environments, including specialized piston cooling via spray nozzles. manual engine mercedes benz om 444 la
Unlike the electronic common-rail monsters of the 2020s, the OM 444 LA belongs to the golden era of mechanically governed diesel power. It is a 90-degree V12, produced primarily from the late 1980s through the early 2000s. It is the bigger brother to the OM 442 (V8) and shares DNA with the legendary Series 4000 industrial engines.
The "OM" designation stands for Oelmotor (oil engine), reflecting its heritage as a robust diesel worker. The OM 444 LA variant is specifically distinguished by its use of and intercooling (L) , which significantly boosts its output compared to naturally aspirated models. Specification Configuration V12 Engine, 4-stroke cycle Displacement ~21.93 Liters (up to 22.6L in certain variants) Max Power Output Up to 588 kW (approx. 800–1,000 HP) at 2100 rpm Peak Torque Approx. 3,200 Nm Bore x Stroke 128 mm x 142 mm Compression Ratio 14.5:1 (Turbocharged variants) Weight (Dry) Key Performance Features The Mercedes-Benz OM 444 LA engine has been
The Mercedes-Benz OM 444 LA manual engine offers a range of advantages and benefits, including:
Veteran marine engineers know the Achilles' heel of the OM 444 LA. Your manual is the antidote. It responds to a wrench, a stethoscope, and the human ear
The OM 444 LA drives a massive alternator, coolant pump, and often a hydraulic pump for steering. The manual includes a laser-straightedge protocol for pulley alignment. Misalignment by 2mm eats belts in under 50 hours.
Before diving into oil galleries and injector timing, we must understand the name. Mercedes-Benz uses a logical, albeit dense, naming system.
For maintenance and overhaul, these primary torque values are essential: Barrington Diesel Club Cylinder Head Bolts: