Genuine OEM Volkswagen Engine Oil Pressure Switch, part number 03L919081. This switch monitors the engine oil pressure, providing a signal to the vehicle's warning system if pressure drops below a safe operating level. It is typically threaded into the engine block or oil filter housing. This switch weighs 0.065 kg. Using a genuine OEM switch ensures accurate pressure detection and reliable operation, preventing potential engine damage from insufficient lubrication and false warnings.