Bolt thread size/pitch for serp tensioner?

1999 alh tdi
One of the threads in the block that hold the serpentine belt tensioner has stripped, going to toss a helicoil in, but I don't know the proper size/pitch...
Any help would be appreciated!

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M8 x 1.25
(Just had my tensioner off the other day)

Nuje said:

M8 x 1.25
(Just had my tensioner off the other day)

Click to expand...

Awesome, thanks

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Yes, that size is correct. Those threads are a little bit of a weak spot.

I just noticed that there's a difference between m8 x 1.25 fine and coarse thread... any thoughts, before I buy a helicoil kit...

Thanks guys!

Not sure where you got that information. M8x1.25 is "coarse" thread pitch; M8x1.00 is "fine" thread pitch.
I think there's even a "super-fine" at 0.75.

Nuje said:

Not sure where you got that information. M8x1.25 is "coarse" thread pitch; M8x1.00 is "fine" thread pitch.
I think there's even a "super-fine" at 0.75.

Click to expand...

This is helpful, thanks!
I think I had a few too many the other night and wasn't thinking