Boy, this tensioner thing is getting interesting! Like you said, just a month ago Mazda parts list had PET2-15-980 for $147.86 MSRP, now another new-and-improved tensioner PE03-15-980C is listed selling for $207.71 MSRP!!!
Now the latest PE03-15-980C replaces: PE01-15-980A, PE01-15-980B, PE03-15-980A, PE03-15-980B, PET2-15-980!
I guess I’m lucky not to jump in too soon getting a new old-version tensioner last month when I noticed the leaky tensioner, although the price has jumped 40%!!!
The TSB says to use PET2-15-980 tensioner and
“new modified drive belt auto tensioner can be identified by serial number F569897.13.”. My theory is the latest PE03-15-980C is equivalent to modified PET2-15-980 with serial number F569897.13., but added some expensive super sealing which caused the 40% higher price!
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