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Official GM Gasket , Seal , Sensor Part Number Thread...

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Old 06-15-2012, 04:15 PM
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Small 10mm head bolt: 12558840
15mm Head bolt for 04+ blocks: 19258707

These part numbers are for individual bolts. Apparently the head bolt kits are on backorder currently. Just posting these numbers up for future reference.
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Old 09-20-2014, 11:32 AM
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how about the L92 intake manifold retainers for the rubber gaskets. i can find the stupid gaskets all day long but not the retainer piece that clips to the mani. square port. i found the cathedral type.

found it finally!!

89060434 Manifold Gasket for one
Last edited by TURBHOE; 09-20-2014 at 12:47 PM.
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Old 09-20-2014, 12:50 PM
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This is a cool thread. Lots of good info. I may be lookin in the wrong spot. it is a sticky right? If so where can I find it. Thanks
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Old 10-17-2018, 04:00 PM
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On your list it says "12612350 -Valley Cover Gasket" but for me that is the oil pan gasket the valley cover gasket is 12558178 hope this helps.
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Old 10-17-2018, 04:06 PM
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Originally Posted by JonToski187
On your list it says "12612350 -Valley Cover Gasket" but for me that is the oil pan gasket the valley cover gasket is 12558178 hope this helps.
Corrected It. It may have accidentally been mislabeled or a mistake during one of many edits.

Thanks!
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Old 11-02-2020, 09:12 AM
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Originally Posted by midnight_bowtie
posted in 2008 and I'm just coming across it. Wonder how many other good threads I've missed
Originally Posted by 53RUSSELL
Why is this not a sticky????????????????????????????
Originally Posted by budhayes3
This thread is now a sticky
still just as important today as it was in 2008... Thank you for this thread
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