O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless
O2 Sensor Bung – Mild Steel or Stainless

O2 Sensor Bung – Mild Steel or Stainless

525057

$6.95
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Shipping calculated at checkout.

The O2 Sensor Bung, available in either mild steel or stainless, is designed for adding an oxygen sensor port to your exhaust system during fabrication or modification. Built from weldable mild steel, this bung is easy to integrate into custom exhaust setups, making it a go-to solution for builders working on performance, off-road, or street applications.

With a standard M18 x 1.5 thread, this bung is compatible with most factory and aftermarket O2 sensors. It can also be paired with an O2 bung plug when a sensor is no longer needed, allowing you to cleanly seal the port without leaving an open hole in your exhaust.

Includes 

  • (1) Mild Steel or Stainless O2 Sensor Weld-In Bung
Specifications
  • Material: Mild steel or stainless
  • Thread Size: M18 x 1.5
  • Weld-in design for custom exhaust systems
  • Compatible with standard O2 sensors
  • Can be used with O2 bung plugs
  • Easy to weld and fabricate
Fitment
  • Universal exhaust fabrication
  • Factory and aftermarket exhaust systems
  • Off-road vehicles and rock crawlers
  • Race cars and performance builds
  • LS and LT engine exhaust systems
  • Any application requiring an O2 sensor port
Tech Insight

O2 bungs provide a secure, leak-free mounting point for O2 sensors, ensuring accurate readings for tuning and engine management.

If you plan to remove the O2 sensor later, pairing this bung with a matching M18 x 1.5 bung plug allows you to seal the system without reworking the exhaust. For corrosion resistance in harsher environments, a stainless bung may be a better long-term option.