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Old 03-21-2009, 03:13 PM   #1
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Default Idler pulley bolt

Ok so I needed to replace the idler pulley (the grooved one which is in the belt path of the supercharger) and the Torx head snapped. Score one for GM. The dealer tells me I need to buy the entire tensioner assembly because you can't buy just that bolt, because it has been discontinued. No parts stores carry it because it is reverse thread. Also, not having any luck with the junkyards. Is this bolt the same as the other idler pulley? Can I take it from a different idler pulley at a junkyard or does it need to be this specific torx head bolt?

(I apologize I just realized I posted in the wrong category.)

Last edited by Purplehazeir; 03-21-2009 at 03:39 PM. Reason: Moved from Performance Area
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Old 03-21-2009, 04:07 PM   #2
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I believe both tensioners are the same bolt.
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Old 03-21-2009, 04:27 PM   #3
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i know the tensioners are the same i need to know about the idler pulley is it possible to use a tensioner bolt on the idler pulley they are both reverse thread
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Old 03-21-2009, 04:34 PM   #4
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Lets make sure we are talking about the same bolts here.
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#3 and #9 are reverse thread, #8 is normal thread. #3 and #9 should have the same bolt.
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Old 03-21-2009, 05:39 PM   #5
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I am talking about the number 8 pulley. the GROOVED idler pulley. This IS REVERSE thread. I just went to a junkyard and snagged the bolt off of the tensioner from a dead 3800. The bolt is exactly the same except the head is bigger and it is a 15mm instead of a torx. (I'm sure everyone will agree, we would much rather have a 15mm than a torx anyway)
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Old 03-21-2009, 05:41 PM   #6
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I actually grabbed 2 of em, so I'm gonna change the tensioner torx to a 15 mm as well because it just makes sense to haha. O and the caps in the last response is not to be sarcastic so I apologize if it came off that way, but I was only doing it to make sure we are talking about the same things.
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