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GM Part Number Looks Wrong !

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Old Feb 11, 2023 | 12:54 AM
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Default GM Part Number Looks Wrong !

I ordered an ACDelco OEM water pump from Summit.
The ACD part number is 251-744
The corresponding GM part is 12681185

HOWEVER…the part number on the pump shows GM 12681179, which doesn’t come up in any part# search. Ideas?




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Old Feb 11, 2023 | 01:32 AM
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i installed this one back in 2016 and has been running great since.

ACD part number = 252-846

Amazon Amazon

both yours and my part numbers correspond with the c5 so you should be good
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Old Feb 11, 2023 | 01:57 AM
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The ACD sticker on the box is correct, but the GM part # on the pump doesn’t match anything I can find.


Last edited by vette4fl; Feb 11, 2023 at 02:02 AM.
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Old Feb 11, 2023 | 08:26 AM
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Based on this, it looks to be a Holden part;

https://malexmotorsports.com/collect...s1-ls2-l98-l76
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Old Feb 11, 2023 | 12:07 PM
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Originally Posted by JHrinsin
Based on this, it looks to be a Holden part;

https://malexmotorsports.com/collect...s1-ls2-l98-l76
Freekin amazing. Some of the packaging was missing, and the plump was just laying cattywampus in the box. This is literally how it looked when I opened it.



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Old Feb 11, 2023 | 12:35 PM
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I called Summit and the are sending a replacement and a return shipping label. Great customer service!

@JHrinsin I don’t know how you found that part number, but arming me with info surely helped my conversation with Summit.
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Old Feb 11, 2023 | 12:51 PM
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Glad I could help.
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Old Feb 11, 2023 | 04:21 PM
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Now you can save a couple bucks by getting the $90 one from Amazon
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Old Feb 12, 2023 | 02:10 PM
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Originally Posted by vette4fl
Freekin amazing. Some of the packaging was missing, and the plump was just laying cattywampus in the box. This is literally how it looked when I opened it.


Avoid Summit like the plague! They mark up their parts so much. Rockauto will have this part for considerably cheaper and in original packing. Never opened.
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Old Feb 12, 2023 | 03:19 PM
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Originally Posted by jjjobrien
Avoid Summit like the plague! They mark up their parts so much. Rockauto will have this part for considerably cheaper and in original packing. Never opened.
You’re right ! Rock Auto was $10.00 less.

On the other hand, Summit didn’t charge shipping, whereas Rock Auto would. In the end I saved about $10 through Summit.

BTW, I’ve used both sellers and been very satisfied. While there was an error on this particular product, Summit responded immediately with the return/reship process.
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Old Feb 12, 2023 | 03:23 PM
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Originally Posted by vette4fl
You’re right ! Rock Auto was $10.00 less.

On the other hand, Summit didn’t charge shipping, whereas Rock Auto would. In the end I saved about $10 through Summit.

BTW, I’ve used both sellers and been very satisfied. While there was an error on this particular product, Summit responded immediately with the return/reship process.

summit always charges shipping. And they also send used parts that have been unboxed.

Last edited by jjjobrien; Feb 12, 2023 at 03:31 PM.
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Old Feb 12, 2023 | 03:40 PM
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Originally Posted by jjjobrien
youre looking at the wrong part. You didn’t buy oem.
The part I bought is the top of the line OEM ACDelco/GM part. ACD 251-744 is what I purchased and that’s the same number shown on Rock Auto as the OEM option.

Since its an ACDelco manufactured part for GM as OEM, which is very common, the part usually has the GM equivalent part number cast, or printed on it.



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Old Feb 12, 2023 | 03:52 PM
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Originally Posted by jjjobrien
summit always charges shipping. And they also send used parts that have been unboxed.
My invoice from Summit shows charged for the part + tax. No shipping charges.

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Old Feb 12, 2023 | 04:20 PM
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Originally Posted by vette4fl
My invoice from Summit shows charged for the part + tax. No shipping charges.
probably because they sent you a used part.
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Old Feb 12, 2023 | 10:08 PM
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Most likely because Summit doesn't charge shipping on orders over $99.
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