304 Stainless Steel O₂ Sensor Bung (M18×1.5) – Saddled with Lip, Weld-On

Elevate exhaust performance with undeniable precision.
This 304-grade stainless steel weld-on O₂ sensor bung is engineered for fabricators and performance builders who demand precision, strength, and seamless fit. Featuring an M18×1.5 thread and a carefully saddled seating surface topped with a sleek machined lip, it ensures an airtight seal and stress-free installation.

• Top-tier material – Crafted from 304 stainless for outstanding corrosion resistance and longevity.

• Universal sensor compatibility – Standard M18×1.5 threading fits nearly all O₂ sensors on the market.

• Enhanced mating geometry – Saddled seat ensures perfect alignment on curved pipes, while the lip adds structural reinforcement and clean aesthetics.

• Precision CNC fabrication – Every bung delivers pinpoint thread accuracy and flawless weld surfaces to eliminate leaks and misalignment.

Ideal for: Custom exhaust builds, performance tuning, aftermarket headers, turbo applications, and repairs where reliability meets form. Trust Bend Brothers for parts that weld up flawlessly and hold strong on the road.