A1120780149 0280156014 Mercedes M112 M113 Injector – OEM Used & Tested

Description

This Mercedes-Benz petrol fuel injector is a genuine OEM electromagnetic fuel metering component for M112 V6 and M113 V8 petrol engines. Primary OEM number A1120780149, with the secondary Bosch code 0280156014 also listed for this unit. It is designed to open and close on command from the engine control unit, delivering a precise, finely atomized spray of fuel into the intake port so that fuel and air mix evenly before combustion.

Its job is to deliver the exact amount of fuel each cylinder needs at every load and engine speed, with a consistent spray pattern and a quick, repeatable opening and closing response on every cycle. A properly working injector supports smooth idle, even power delivery, stable fuel trims, reasonable fuel economy and correct operation of the fuel system and emissions control as a whole.

Common signs of a faulty unit include misfires on one cylinder, rough or uneven idle, hard starting, hesitation under acceleration, higher fuel consumption, a raw fuel smell and lean or rich mixture fault codes. When an injector leaks, clogs or sticks, the engine may run unevenly, lose power, overheat a cylinder or damage the catalytic converter and shorten engine life over time.

This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number A1120780149 before ordering. Professional installation is recommended, and a fuel pressure check, new seals and O-rings, injector balance test, fuel rail inspection and scan tool diagnosis are advised where applicable.