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Broken rocker arm cover bolt
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Patwiser
New User
Feb 28, 2025, 10:06 AM
Post #1 of 2
(14 views)
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Broken rocker arm cover bolt
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I recently bought an 01 blazer and noticed a coolant leak which led me to replace lower intake manifold gasket. While replacing all the other gaskets broke a rocker arm cover bolt when replacing it. I believe the part number is 10201396. I’ve gotten the old bolt drilled out of the hole but I damaged the threads and I need to rethread it. The information I need is a specs on the bolt is it an M8 or an m10 what are the distances between the threads and the thread depth etc. Also any tips on rethreading the bolt hole would be awesome. Vehicle is 2001 Blazer LT with 4.3 vortec two-wheel drive.
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Hammer Time
Ultimate Carjunky
/ Moderator
Feb 28, 2025, 10:48 AM
Post #2 of 2
(7 views)
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Re: Broken rocker arm cover bolt
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That is not information that is published anywhere. You just need to measure the old bolt. Most mechanics can tell just by looking at it whether it's an 8mm or a 10mm and the thread count.
I just Googled the part number and it states it's 1/4X20 which is not metric at all.
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