AC in AC Delco Spark Plugs stands ALBERT CHAMPION. Alberta Champion lost control of the Champion Spark Co in 1908 and then started AC Spark Plug Co. Ac was bought out by General Motors in 1909.
Reference Wikipedia --Flint East
ID1232132123's answer is: Albert Champion Doug's answer is: Alternating Current
AC Delco Iridium spark plugs.
I would recommend the OEM spark plugs, AC/Delco. Excellent plugs.
Spark Plugs .035Points .019Plugs--AC/Delco R43N
From what I've been told from my AC DELCO REP they are NGK plugs
the vibe uses ac spark plugs and they are rebranded ngk
AC are the OEM spark plugs and they are excellent plugs. I would recommend you buy AC/Delco Iridium Spark Plugs. They are as good or better than any others you can buy. NGK are also great plugs and I have been told they make the AC plug but I cannot verify that.
ac delco copper Use the factory recommended plugs. AC delco 41906.
AC plugs
AC/Delco
All plugs are, But you should check them yourself again.
ac delco spark plugs are type that originally came with 2003 GMC envoy