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AC Tensioner bolt size.

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Old Oct 17, 2020 | 04:55 PM
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Default AC Tensioner bolt size.

I need to know the size of the bolt that attaches the ac tensioner to the block?
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Old Oct 17, 2020 | 08:34 PM
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15mm
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Old Oct 17, 2020 | 08:47 PM
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10 mm course thread with a 15 mm head.
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Old Oct 17, 2020 | 09:39 PM
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Was needing to replace the actual bolt a friend lost it.

The bolt size ending up being a M8-1.5 x 45
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Old Oct 18, 2020 | 08:24 AM
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I was thinking the pulley bolt is 10 mm with 15 head.
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Old Jan 10, 2026 | 02:29 AM
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Originally Posted by Bryan250
Was needing to replace the actual bolt a friend lost it.

The bolt size ending up being a M8-1.5 x 45
I know this thread is very old but this information is wrong and needs to be corrected.
It is M8-1.25 x 40
I know this because I was looking to re-tap both one of my oil pan bolts and this ac tensioner bolt.
According to this thread, the oil pan is M8-1.25
11515758 Bolt 13 M8X1.25X30
Then after reading this post here out and out of curiosity compared one of my oil pan bolts to the ac tensioner bolt, and they matched suprisingly. I was also able to thread my ac bolt into an oil pan thread just fine.
So I went and googled some more and found this thread which claims it does match the thread of the oil pan
AC Tensioner to bracket- M8*1.25*40
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