Twisted Choppers O2 Port Bushing Adapters 18mm-12mm Zinc Plated USA Made Sold as Pair
Keep your exhaust system dialed in with the right O2 sensor fitment – these zinc-plated port bushing adapters let you upgrade to newer, smaller oxygen sensors without cutting or welding new bungs. Built to USA standards and sold as a matched pair, they deliver the reliability and clean installation your custom build deserves.
Key Features
- Adapts 18mm O2 sensor port bungs to the newer 12mm sensor size
- 18×1.5 male thread to 12×1.25 female thread configuration
- Zinc plated for corrosion resistance in exhaust environments
- Sold as a matched pair
- Made in the USA
Technical Specifications
- Male Thread: 18×1.5
- Female Thread: 12×1.25
- Finish: Zinc plated
- Quantity: Sold as a pair
- Origin: Made in the USA
Fitment Notes
- Fits any exhaust header or bung with an 18mm O2 sensor port
- No welding required – thread into existing 18mm bung and install 12mm O2 sensor into the adapter
- Review the Fitment tab for complete compatibility information
Jonathan Hatt –
Did need them for my 2011 HD Forty Eight, but better safe than sorry.
Marc S. –
Fit perfectly