I am replacing my plugs in my 2012 f-150 5.0 truck with NGK laser iridium spark plugs. what it the correct gap? I see many different answers on the internet.

  • 1
    So any answer you get here will also be "on the internet" right? Did you check your Owner's Manual?
    – jwh20
    Commented Jan 30, 2020 at 16:43
  • I'd think the NGK site would be authoritative. ngk.com/product.aspx?zpid=40122
    – Phil G
    Commented Jan 30, 2020 at 19:20
  • Plugs are pre-gapped these days, trying to adjust this on that type of plug Will Damage it!
    – Moab
    Commented Feb 2, 2020 at 1:37

1 Answer 1


RockAuto.com shows the gap for the two different NGK Iridium plugs listed (95853 & 6509) for your F-150 5.0 to be 0.052".

With that in mind, most plugs of this type are set from the factory. They'll usually state "Do Not Gap" on the box. Ensure you check to see if this is true with your plugs before you start bending on things.

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