"Works on the 1-1/16\" oil pressure gauge/light combination switch found on 1987 and newer domestic Chrysler vehicles","Extra-deep to fit the liner style oil pressure switches","Fits '91 and newer GM vehicles and select Ford applications","Use with a 3/8\" square drive tool or 1-1/8\" wrench 1-1/16" OIL PRESSURE SWITCH SOCKET SPS1325A | Matco Tools