F.A.S.T. Stainless Oxygen Sensor Plug - 18 mm x 1.50 Male Thread 4122RD Bolt and Spacers kits are

Bolt and Spacers kits are available separately

1985-1995 GMC Safari

They are cast from A356 aluminum and heat treated to T6 specifications

100" longer than stock pushrods are required

1965-1983 Cadillac Commercial Chassis

F.A.S.T. Stainless Oxygen Sensor Plug - 18 mm x 1.50 Male Thread 4122RD Bolt and Spacers kits areThis oxygen sensor plug seals O2 bungs when they are not in use. Plug off an unused oxygen sensor port with this bung plug. Ensures that your unused O2 port will not allow fresh air from disrupting other oxygen sensor readings downstream. O2 Sensor Bung Plug Seals bung where O2 sensor would normally screw in. FAST is the leading developer of electronic fuel injection systems, EFI components, intake manifolds, tuning tools for high performance and