INJECTOR 8M0041571

Function and technical context

The fuel injector is an essential component of the electronic injection (EFI) engine feeding system, responsible for spraying fuel into the combustion chamber with millimeter precision. It works integrated into the engine cylinder head, coordinated by the electronic control unit that regulates the exact injection time and quantity according to the engine operating conditions. Its correct performance is essential to guarantee efficient combustion, maintain the engine's nominal power and reduce polluting emissions; Any injector failure causes loss of power, rough idling, excessive fuel consumption and even unexpected stops while cruising.

When to replace this part?

Symptoms of injector failure include difficulty starting the engine, rough or unstable idling, noticeable loss of power during acceleration, increased fuel consumption for no apparent reason, and ECU error codes related to specific cylinders. Although these components have a long service life in well-maintained marine applications, it is recommended to check the condition of the injector during each seasonal maintenance and replace preventively if carbon deposits or changes in the spray pattern are detected, thus avoiding costly repairs and ensuring the reliability of the engine in navigation.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers