Anyone use Motorcraft AWSFA-12C plugs for their 99-up Lightning?
If this isn't the right part #, what is the correct Motorcraft plug # for copper plugs that fit the Lightning (heat range of 12)??

So far, I've got AGSF-12E for 99 Lightnings and AGSF-12FM1 for 00-up Lightnings (OEM spec Platinum crap).

Thanks

 

First off you don't want to use any platnum plugs in a blown engine, so rip those out!

secondly go one range colder then stock and stick with the NGK TR6's.

Later



1999 ford f150 lightning, #973 of 4000
Best run to date: 12.28 at 115 MPH on the 50 shot!
Power Surge Performance