Gauge Style Oil Sender Switch for 1965-1989 Mustangs.
Threads into the oil sending unit extension which threads into the side of the engine block. This part is what makes your oil pressure gauge operate correctly.
*Fits 1965 Mustangs with a gauge style instrument cluster. 1967-1968 Mustangs with the original gauge feed wiring harness will need an adapter for their harness to plug onto this unit directly.