This is a oil filter housing union bolt for late model Toyota 1JZ/2JZ engines with VVT-i. This bolt can be used as an additional place to mount an oil pressure sensor with the 1/8" BSPT threaded hole at the end of the bolt. We commonly use these in JZ swaps in MK3 Supras to mount the factory oil pressure sending unit so that the factory gauge works in the dash.
This is a kit that includes (1) oil pressure union bolt, and (1) crush washer gasket.
