I agree. That’s why I have wait-and-see attitude and postpone the leaky belt tensioner replacement at this time.
I actually stopped by my Mazda dealer checking out the OEM belt tensioner while I was gettin a new OEM battery. The parts guy whom I know well showed me the current part number for belt tensioner from Mazda parts screen and surprisingly it’s PE03-15-980C with the MSRP still at $147.86. Based on the system PET2-15-980 has been superseded by PE03-15-980C months ago, and PE03-15-980C tensioner is the one they’re getting currently from Mazda. He brought both tensioners out and the serial number on older PET2-15-980 tensioner is F-569897.13 which indicates it’s a revised version. But the serial number on newer PE03-15-980C tensioner is F-569897.10, which is unrevised version based on the TSB! They looked exactly the same as far as I can tell, and I didn’t see different shapes on tensioner damper like the TSB stated. What a mess!
Thanks for the pics, I'm starting to get a headache hearing about this tensioner stuff LOL. I'm just thinking to myself, is it really a big deal which tensioner we get from Mazda anymore? As long as we don't hear any rattles going on then it should be fine to keep the old/non-revised one.
I feel as if this falls under the saying, "if it ain't broke, don't fix it." In my case, the only reason why I replaced mine is because I don't want to perform this procedure when it's snowing outside with temps below 0*F if it does occur.