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top coolant plugs in heads

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Old Jul 18, 2005 | 11:59 AM
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Default top coolant plugs in heads

Hey guys,

I used the search to find the part #'s for the rear coolant plugs in the heads (the ones on top that correspond to the coolant crossover pipe in the front) but I've found like 3 different GM part numbers and I don't know which ones are right. One of them doesn't even exist in the GM parts direct catalog.

I need the part numbers for the coolant plugs and the bolts. If anyone has the current #'s for these that would be awesome. Thanks!!!
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Old Jul 18, 2005 | 12:06 PM
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I have 12570678 for the coolant plugs, not sure about the bolts. Give sdpc a call, I'm sure they can help you with both parts.
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Old Jul 18, 2005 | 01:56 PM
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Originally Posted by AnthonyR
I have 12570678 for the coolant plugs, not sure about the bolts. Give sdpc a call, I'm sure they can help you with both parts.
Cool, well at the very least, anyone know what size of bolt I need to secure the plugs with? Anybody just plugged up the coolant holes there with 2 bolts instead of using the GM plugs? Just wondering if that's an option....
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Old Jul 18, 2005 | 01:59 PM
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Part: 12570678
Category: All
Description: COVER
Min.Qty: 1
Unit Price: $2.74
Quantity: 1
Ext.Price: $2.74
Core Charge: $0.00

This is for the plugs, I am sure there are no bolts. I assume you are putting an LS6 intake on, just get the plugs for the back and the crossover pipe for the front and you are good.
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Old Jul 18, 2005 | 02:04 PM
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Originally Posted by PSYKOZ28
Part: 12570678
Category: All
Description: COVER
Min.Qty: 1
Unit Price: $2.74
Quantity: 1
Ext.Price: $2.74
Core Charge: $0.00

This is for the plugs, I am sure there are no bolts. I assume you are putting an LS6 intake on, just get the plugs for the back and the crossover pipe for the front and you are good.

Ok, thanks man. I couldn't remember what was back there since I never took them off my old heads.
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Old Jul 18, 2005 | 02:09 PM
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Yep, just use the existing bolts from the crossover pipes that are already in there. If you don't have those, coil pack bolts work fine too.
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Old Jul 18, 2005 | 02:21 PM
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https://ls1tech.com/forums/showthrea...52#post3117052
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