1991 GMC 1500 Pickup Q&A

1991 GMC 1500 Pickup Question: I removed the old oxygen sensor and tried to put in the new one, but it won't

fit????Why and what do I do now since it won't pass inspection because h20 is too high?? -
Answer 1
wrong part -
Answer 2
Threads damaged.Get appropriate size tap and re-thread. -
Answer 3
Someone sold you the wrong sensor...Ask for a upstream if the sensor is on the manifold... -