I'm in the process of changing out my O2 sensors. The passengers side before the cat stripped the threads off the sensor. It also buggered up the starting threads on the cat. What size tap will correct this? Are they standard or Metric? In talking with Magnaflow, the cat is not theirs. This is the cat included with the Dynatech long tube header package offered from Troyer Performance. Unforetanely, it's after hours to contact the Troyer team for help. The truck is a 2004 F150 FX4 with the 5.4L. Thanks for the input.

Turbine Dave

 

Bumping it back to the top. Anyone have an idea???????