Mercedes-Benz OM605 engine

The Mercedes-Benz OM605 is a 2.5 litre (2,497 cc) inline-five diesel engine with double overhead camshafts and indirect injection, built by Mercedes-Benz between 1993 and 2001 as the replacement for the single overhead camshaft OM602. It normally uses a Bosch electronically controlled inline injection pump, except in the W124, where a mechanically governed Bosch M pump is fitted. The cast iron block has six main caps and the aluminum head has four valves per cylinder with split intake ports and hydraulic bucket lifters, so no periodic valve adjustment is needed. Turbocharged versions gained an intercooler compared with their predecessors. A double-row chain drives the camshafts and injection pump. It is related to the OM604 four-cylinder and the OM606 six-cylinder.