Hi guys,
I have a 2.0 blacktop zetec with 16mm socket size spark plugs.When looking at gunson colourtuners they quote 10mm 12mm and 14mm but no 16mm.

What sizes are they talking about???? socket size ???

any ideas what I should be buying??

cheers Ross

You need to measure the thread diameter of your spark plugs, nothing to do with the socket size, IIRC you need 12mm but better to measure one

cheers for that,thought it maybe just wanted to check before ordering one from amazon.

Ross

Because there is no such thing as a a 16mm plug, the Pinto and a few other old Ford USA designed engines use 18mm tapered seat spark plugs.

A quick double check shows your engine has 14mm plug thread plugs

cheers for that.

Ross