Ideal to mount 1/8PT Temperature and Pressure Sensors.
Oil Block Adapter includes two center bolt sizes: M20xP1.5 & 3/4"x16UNF, to fit most Japanese engine makes.
Also included are two common O-ring sizes: I.D. #5- 56mm & #6- 65mm
Sensor ports: 2x 1/8PT for pressure and temperature, 1x M12xP1.25 washer seal type.