Part number help

[73ChargerSE]

Hey guys, just got some NOS spark plugs(unfortunately only 7 of them. The part numbers on them are 3420753. Can anyone look these up and tell me what they're for?

Thanks!
Paul

[Ghoste]

That's the Chrysler number?  I ask because the limited material I have shows spark plug numbers in a very different range as that number and the number you have I can't find.  Numbers find close to it are all carb parts.

[73ChargerSE]

Yeah, that's the mopar number that's on them. There's also "64 S" on the plugs themselves and on the box. Anything with that? For what its worth, they are from 72.

[Ghoste]

The 64 sounds more like an old Autolite number to me.  I guess I can't help you much.

[John_Kunkel]

There's also "64 S" on the plugs themselves and on the box.

That's the numbering system for the Mopar brand of plugs used in the seventies, it is equivalent to a Champion N6 or an Autolite 395.

[Nacho-RT74]

closers I have RIGHT NOW are 758 752 and 751

[Nacho-RT74]

here is from 70-71 catalog, but numbers are the same than my 74


I'm thinking the some of the PN could it be for the complete package/set ?