Mercedes-Benz OM646 engine

Mercedes-Benz OM646
Overview
ManufacturerMercedes-Benz
Production2002–2010
Layout
ConfigurationInline-four engine
Displacement2.1 L (2,148 cc)
Cylinder bore88 mm (3.46 in)
Piston stroke88.3 mm (3.48 in)
Cylinder block materialCast iron
Cylinder head materialAluminium alloy
ValvetrainDOHC
Compression ratio17.5:1 (DE22 LA EVO), 18.0:1
Combustion
TurbochargerSingle
Fuel systemCommon rail
Fuel typeDiesel
Cooling systemWater cooled
Output
Power output65–125 kW (88–170 PS; 87–168 hp)
Torque output220–400 N⋅m (162–295 lb⋅ft)
Emissions
Emissions target standardEuro 4
Emissions control systemsEGR, DPF
Chronology
PredecessorMercedes-Benz OM611 engine
SuccessorMercedes-Benz OM651 engine

The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz.