2018年12月31日 · Factory plug is a AC44, but these are no longer available. AC44S are available, but I believe the "S" stands for an extended tip which is a little longer than the AC44. Other options are an AC43 or AC43S (I believe colder heat …

2024年6月27日 · I have 6 AC44 spark plugs new in the box I won't separate. $24.00 + shipping. PM me if interested

2005年5月18日 · Ok I know my 56 Buick century uses AC44 but what is the Autolite numberfor the same plug. My son bought me an 8 set of Autolite 85 and heclaims the dealer (Advanced Auto) said they were the same. However theydo not look the same. I also picked up a set of 5 new AC45 and 4 new AC44S at a yard sale...

2024年12月11日 · The Buick shop manual shows the correct plug as AC44. They seem to only be available with tapered seat from what I can find. Been running AC43 but would like to know what others are using that may be a better option. Any suggestions are appreciated. John

2004年7月21日 · In order of preference ( Mine): ACDelco 44S (hard to find 20-30 bucks a set) ACDelco R44S (able to be found 15-20 a set)