A.P.A. URO is a supplier to many automotive manufacturers and provides OE quality European replacement parts to the aftermarket. URO Parts is a highly diversified product line including, body rubber, electrical, suspension, steering, cooling and air conditioning components. This oil pressure switch is a 'Factory Up-Date' of the original that has a high failure rate. This 'Up-Date' switch acts like an 'on/off' switch with an in-line resistor that transmits a reduced signal to the gauge. The 'on/off' action of the up-date switch is like that of an 'Idiot Light' To have the pressure gauge work as normal/original - use part # LMD 5640AB. Switch # JLM 20791 looks completely different/smaller than the original