Oxygen Sensor Plug Each

The Oxygen Sensor Plug (18 mm x 1.50 Male Thread) is a precision-engineered hex head fastener designed for critical sensor mounting applications in powertrain systems. Manufactured from steel with a zinc oxide finish, this individual plug delivers corrosion resistance and reliable thread engagement where thermal cycling and exhaust system exposure demand durability.

The 18 mm x 1.50 male thread specification ensures compatibility with OEM oxygen sensor bungs and emission control components commonly found across domestic and import vehicle platforms. The hex head design provides positive tool engagement and controlled torque application, critical for preventing thread stripping in cast iron and aluminum manifold bosses. The zinc oxide coating protects against oxidation in high-temperature exhaust environments, extending service life and preventing seizing during future removal. At 0.12 lbs, the plug's minimal mass allows straightforward installation without weight penalty.

This plug is essential for technicians rebuilding exhaust systems, installing aftermarket oxygen sensors, or replacing corroded factory hardware. Off-road enthusiasts and engine builders who modify emission control systems require plugs that can seal sensor bosses when sensors are not in use. Performance shops and independent service facilities stock these as replacement hardware for routine sensor maintenance and system diagnostics. The individual unit format allows for targeted repair without minimum bulk purchases.

Oxygen sensor plugs are foundational components in exhaust management. Proper hardware specification—thread size, material grade, and corrosion resistance—directly affects seal integrity and prevents vacuum leaks or exhaust gas intrusion into sensor cavities. This steel hex head design with zinc protection represents standard replacement-grade specification found in both OEM service parts catalogs and aftermarket supplier inventories.