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2004 Yukon spark plugs
- Thread starter poffpilot
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OP
OP
poffpilot
TYF Newbie
Thank you. I just ordered the ACDelco 9748HH along with a fuel and air filter
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I got the Edelbrocks because of the quality, and red color was cool.....
West 1
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AC Delco has not made spark plugs in 40 years. They are usually made by Champion, Autolite or one of the Japan manufacturers. The contract will vary every year so you never know who is building them.
I installed Champion Iridiums in my 03 at 100K and my 08 at 145K. I know these are the last plugs I will ever install in those engines. Iridium plugs are good for 200K.
I used to be able to open an AC Delco box and tell you who made the plugs as each company has unique markings on the plug but I have been retired a while now and that stuff fades away when you don't use it every day.
To say you only trust AC Delco you are saying you trust all 4 possible OE suppliers. Just buy from one of them and save money.
I installed Champion Iridiums in my 03 at 100K and my 08 at 145K. I know these are the last plugs I will ever install in those engines. Iridium plugs are good for 200K.
I used to be able to open an AC Delco box and tell you who made the plugs as each company has unique markings on the plug but I have been retired a while now and that stuff fades away when you don't use it every day.
To say you only trust AC Delco you are saying you trust all 4 possible OE suppliers. Just buy from one of them and save money.
