Vibrant 16790; Oil Pressure Adapter Black M16x1.5 to 1/8 in. NPT for Chevy LS. Vibrant's Chevy LS Engine Oil Pressure Adapter allows you to retain the OEM oil pressure switch (with M16 x 1.5 thread) while running an oil reference port to your turbo or any related accessory (e.g. oil pressure gauge).
