Originally posted by BBorges:
i just bought 4 plugs from the dealer and they gave me the following plugs:


AYFS22FM



But I noticed the thread is different length and the number DOES NOT MATCH the manual nor Haynes manual.

I currently have the AYFS22PP.


Can someone confirm whether the dealer is right and the FM will indeed work in the zetec (even though it seems like the threads are different) ?


Thanks

BB




It's just an updated number...same thing with Autolite...5344 and 5364 are your choices. I used APP5364s the last time that I tuned one. More threads, seat depth is exactly the same, overall length is the same.