02 sensor extension spacer with hole
130 10 10 009

This adapter useful in mounting exhaust systems for testing of track evaluation purposes. This tester will screw into the o2 bung and allow outside air during evaluation and testing. The Racing Dynamics adapter is manufactured out of stainless steel. Has M18X1.5 threads to screw directly into the O2 bung.
These testers are not for street application and are intended for NON ROAD APPLICATIONS.