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Old 09-16-2024, 12:48 PM   #1
aaron1le
 
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Stock AC Delco Spark Plug Part#

What is the correct part# for AC Delco Plugs?
Keep getting different numbers.
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Old 09-16-2024, 04:08 PM   #2
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pretty sure it's this.

https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1
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Old 05-06-2026, 05:10 PM   #3
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Revisiting an old thread instead of creating a new one.
The Amazon link above is for the original listing for the plugs. They now say the 41-114 does not fit my car. Rock Auto used to have the same number listed but now have 41-168 (19459511). Amazon cannot confirm if that is right or not. Some of the online GM parts places just show the exploded drawing of the ignition and related components from the service manual and point to the original number for the plugs. Can anyone verify what is now specified for the LT1? Thanks.
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Old 05-06-2026, 06:07 PM   #4
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Use ngk
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Old 05-06-2026, 06:50 PM   #5
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Quote:
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Use ngk

I'd be interested in looking into that. Which plug is equivalent to the Delco? I've only used those in a motorcycle and that was many years ago.
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Old 05-06-2026, 07:58 PM   #6
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Quote:
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I'd be interested in looking into that. Which plug is equivalent to the Delco? I've only used those in a motorcycle and that was many years ago.
I'm not sure on the number. I can look into it. Ngk plugs are pretty solid across all platforms. AC delco with "Japan" stamped in the collar are NGK plugs.
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Old 05-06-2026, 08:06 PM   #7
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91418
I would suggest avoiding amazon and going to rockauto.com
You're more likely to get knock off plugs from amazon
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Old 05-07-2026, 06:05 AM   #8
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Quote:
Originally Posted by bishopts View Post
91418
I would suggest avoiding amazon and going to rockauto.com
You're more likely to get knock off plugs from amazon
This for sure. I bought a set of AC Delco plugs off Amazon years ago for my previously owned '14 SS 1LE. That summer I noticed increased fuel consumption and carbon specs on my rear bumper. Pulled the plugs and the gap grew well beyond spec. Installed plugs from Rockauto and all was well. I avoid any critical components from Amazon.
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Old 05-07-2026, 10:07 AM   #9
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Quote:
Originally Posted by bishopts View Post
91418
I would suggest avoiding amazon and going to rockauto.com
You're more likely to get knock off plugs from amazon

Thanks. I definitely always check Rock Auto. Critical components are not bought on Amazon.


Edit:
On the way. Be here Tuesday.
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Last edited by GroundhogSS; 05-07-2026 at 10:35 AM.
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