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Spark Plugs


EJPut

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I just purchased oem plugs for my 93 sts, is 91-450 the correct part number? The plugs I had in there were different numbers. Also, the new plugs are not "ribbed". Should they be? What is the difference. I did notice more of a point at the bottom of the porcelin on thenew ones.

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The number 41-950 is what I have here:

http://www.caddyinfo.com/newplugs.htm

but perhaps that's what you meant to type. The number change now and then though so if you got AC/Delco double platinum plugs that match up to your northstar you're probably good.

Bruce

2023 Cadillac CT4-V Blackwing

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i just changed my wires & plugs last week...the new ones are the AC delco 91-450's.. the ones i removed, the original plugs, were AC delco ??-929's (i can't remember the first 2 digits)...but the point is, the new plugs are correct for the car...BTW, i bought them through GM parts Direct....bob

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