Hey all, is this the factory timing belt for a 99 miata? It seemed to be in good shape for having potentially 112k on it.
Hey all, is this the factory timing belt for a 99 miata? It seemed to be in good shape for having potentially 112k on it.
Flip it to the other side and create a slight "U" bend. See how many cracks there are. All of the timing belts I've replaced have had hairline cracks, but seemed to be in good shape otherwise. For $20ish bucks, it's cheap insurance to replace
I've seen one that was in great shape other than the fact that it was broken. The numbers on that belt are plausible for factory.
Once a timing belt is removed it should be replaced if it has been run more than a few miles, or if it is a year old or more if un-run. Seriously, they take a "set", and if you remove and re-install you will over tension it.
The number says aftermaket. Looks like it should be a Denso part number.
For God's sake, do not crimp it.
That belt is already in the trash pile while the new belt will go on tonight, don't worry. I didnt dig this far into the motor to cut corners. Just satisfying my curiosity 
It is indeed the OEM belt, P/N for it is B6S7-12-205D-9U if you plan on ordering another oem one.
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