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Mercedes-Benz OM651 platform

Mercedes-Benz 2.1L Twin-Turbo Diesel (Sprinter 2014-2018)

2014-2018 · 2.1L · Mercedes-Benz

20

vehicle configs

7

failure modes

22

parts

3

recipes

recalls + bulletins →

symptoms compared →

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Failure modes

Injector seal blow-by ('black death')

BlueTEC DEF/SCR service (2014-2018)

EGR system: coking and cooler coolant leak

Fuel system: high-pressure pump and piezo injectors

Glow plug module and cold starts

Intake port shutoff (swirl) flaps and motor

Timing chain stretch (long-oil-interval related)

Parts

Sprinter DEF Supply Pump, facelift (000-470-04-00) part-ms51-def-pump Sprinter DEF Tank, 2.1 era (906-470-18-15) part-ms51-def-tank OM651 EGR Cooler (651-140-07-00, current) part-ms51-egr-cooler OM651 EGR Valve (651-140-08-60, current) part-ms51-egr-valve OM651 EGR Valve Gasket (651-142-23-80) part-ms51-egr-valve-gasket OM651 Fuel Filter (651-090-31-52) part-ms51-fuel-filter OM651 Fuel Rail / Distributor (651-070-07-00) part-ms51-fuel-rail OM651 Fuel Water Separator (651-090-29-52) part-ms51-fuel-separator OM651 Glow System Control Unit (651-900-80-03, current) part-ms51-glow-module OM651 High-Pressure Pump (651-070-26-01, current) part-ms51-hpfp OM651 High-Pressure Pump, second chain (651-070-28-01-64, current) part-ms51-hpfp-alt OM651 Piezo Injector (651-070-30-87) part-ms51-injector OM651 Piezo Injector, exchange (651-070-29-87-64) part-ms51-injector-exchange OM651 Injector Copper Seal (611-017-00-60) part-ms51-injector-seal OM651 Intake Manifold with Port Shutoff Flaps (651-090-00-37) part-ms51-intake-manifold OM651 Intake Manifold Seal (651-091-00-60-64) part-ms51-intake-manifold-gasket OM651 Oil Filter Element (651-180-01-09) part-ms51-oil-filter OM651 Oil Filter Housing (651-180-13-10, current) part-ms51-oil-filter-housing OM651 Thermostat (651-200-32-00-64, current) part-ms51-thermostat mercedes-sprinter-om651: timing-chain (honest catalog gap) part-ms51-timing-chain-gap OM651 Coolant Pump (651-200-16-02, current exchange) part-ms51-water-pump OM651 Coolant Pump, parallel variant (651-200-17-02) part-ms51-water-pump-alt

Recipes

Catch-it-early injector reseal: the copper seal blows by, combustion gas cokes around the injector ('black death')

BlueTEC DEF/SCR derate on the 2.1 (2014-2018): diagnosis chain first - DEF quality and level sensing, then the supply pump, tank last

EGR coking and swirl-flap service on the 2.1: EGR soot jams the port shutoff flaps (P2017-family codes) and cokes the valve/cooler

Reference for this engine

Part number lookup

every OEM number we verified

Vehicle configurations