Mercedes-Benz OM606 engine

The Mercedes-Benz OM606 is a 3.0 litre (2,996 cc) inline-six diesel engine with double overhead camshafts and indirect injection, built by Mercedes-Benz between 1993 and 2001 to replace the single overhead camshaft OM603. Like the OM603 it has a cast iron block, here with seven main caps, and an aluminum head with four valves per cylinder and hydraulic bucket lifters. A Bosch electronically controlled inline pump is used except in the W124, which keeps a mechanically governed Bosch M pump. A notable difference from its turbocharged predecessors is the intercooler, and only the .962 version in the W210 E300 Turbodiesel carried an air mass sensor. It is related to the OM604 four-cylinder and OM605 five-cylinder of the same period.