OIL LEVEL SCREW 90340-08002

Function and technical context

This oil level screw is part of the engine lubrication system, acting as a fixing and sealing element on the dipstick or sensor that monitors the lubricant level in the crankcase. Its function is to ensure that the indicator remains correctly positioned and that no oil leaks in the connection area. A defective or worn screw in this location can allow the oil level to not be read correctly, generating false alarms or, worse yet, preventing the detection of a real loss of lubricant that would compromise the life of the engine.

When to replace this part?

Marine corrosion, constant engine vibration and thermal cycling can cause the screw to loosen, rust or corrode, resulting in oil leaks or erroneous level readings. It is recommended to check the condition of this item during each seasonal maintenance, especially if oil stains are detected around the sensor area or if the level reading becomes erratic. Preventively replacing this screw during a maintenance check is a low-cost action that avoids complicated diagnoses and oil losses while sailing.

Equivalent manufacturer part numbers