Oxygen Sensor Fitting Steel 5pk

The Oxygen Sensor Fitting Steel 5pk from VIBRANT PERFORMANCE delivers a reliable, durable solution for engine builders, performance tuners, and automotive technicians who need to integrate oxygen sensors into custom exhaust systems. This five-piece set of weld-on bungs accommodates 18 mm oxygen sensor threads with a 1.50 female thread pitch, making it an essential component for fabricating or modifying exhaust manifolds, test pipes, and emissions monitoring systems. Whether you're building a race engine, tuning a street car, or diagnosing emissions issues, having multiple fittings on hand ensures you can sensor-equip critical points throughout the exhaust system without repeated downtime or supply delays.

Each oxygen sensor fitting is precision-engineered from steel in natural finish, designed for permanent installation via welding onto exhaust piping and manifold bodies. The 18 mm x 1.50 female thread configuration accepts standard oxygen sensors used in OE and aftermarket engine management systems, allowing real-time air-fuel ratio measurement and closed-loop tuning. Steel construction provides superior thermal stability and corrosion resistance compared to aluminum alternatives, ensuring these bungs withstand sustained exhaust temperatures and harsh underhood environments without degradation. The weld-on design creates a secure, permanent mechanical bond that eliminates loose fittings or vibration-induced failures common with threaded adapters.

Performance enthusiasts, custom fabricators, and professional engine builders rely on this five-pack to equip multiple sensor locations—such as upstream and downstream manifold positions, test pipes, and secondary exhaust stages—in a single purchase. The compact dimensions (3.6 x 1 x 3.85 inches) and lightweight 0.28 lbs profile make storage and transport convenient, while the quantity ensures spares for future builds or backup installations. Compatible with any oxygen sensor featuring an 18 mm x 1.50 thread interface, these fittings integrate seamlessly into custom exhaust systems, turbo manifolds, and emissions testing platforms where precise air-fuel monitoring is critical to performance and compliance.