I just took my car (2000 GT) in for its spring maintenance before getting it on the road. One of the things getting done was the plugs, and I had a set of NGK Iridium IX, part number TR55ix, which according to their website is the right plug. According to other posts I found when searching, other people have installed these but my mechanic told me that the thread was wrong on them and they wouldn't fit.
Anybody have any idea why this might be? I doubt he's trying to scam me in any way. He's the go to guy for all the local racers and performance guys and he's pretty much regarded as having one of the best shops in town.
Anybody have any idea why this might be? I doubt he's trying to scam me in any way. He's the go to guy for all the local racers and performance guys and he's pretty much regarded as having one of the best shops in town.