just tell them you need spark plugs for a zetec and the should give you the right ones atleast they did me i was looking for some "performance" spark plugs at the time and they didn't have any so i just went with the oem ones

1996 zetec atx 19.3381 at 71.51 mph 1/4 mile click me for an interesting sitea wbsite you should check outjoined the 100k+ club 5/21/06