MERCURY AIR FILTER 35-897575T01

Function and technical context

The air filter is the critical component responsible for protecting the intake system of the Mercury engine against contaminating particles, dust and debris from the marine environment. In engines equipped with an electronic fuel injection (EFI) system, this filter ensures that only clean, purified air reaches the cylinders, which is essential to maintain the precision of the air-fuel mixtures and the correct functioning of the oxygen sensors. A clogged or deteriorated filter significantly reduces air flow to the engine, causing excessively rich mixtures, loss of power, increased fuel consumption and poor acceleration, especially at high speed cruising.

When to replace this part?

Replacing the air filter should be done preventively during seasonal maintenance, before each boating season, or when a notable reduction in throttle response and available power is observed. In environments with a high presence of salt, humidity and microparticles typical of the marine environment, it is recommended to check the condition of the filter every 50-100 hours of operation and replace it without waiting for signs of failure. Preventive replacement is especially critical in EFI engines, where any contamination can affect air recirculation and the reliability of electronic control systems.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers