Raptor F-150 Ecoboost Recommended Spark Plugs SP542, 2.7L and 3.5L Ecoboost

Let's talk spark plugs. Motorcraft SP542 has been the choice spark plug for all 2011 - 2019 3.5L F-150 and 2017-2019 Raptor but why? With the most insulation around the Electrode and Core, it is the coldest Motorcraft spark plug available.
*We milled the threads off these spark plugs to expose the insulation*

We recommend changing spark plugs every 15k - 20k miles.

SP542 Gap .028 Kit (6pcs)

SP542 Gap .026 Kit (6pcs)

[Travis-hloz]

I don't know if you know this but most people want you to listen to that

[MrHossola]

NGK 90495 is a far better plug than any Motorcraft for these motors.

[Mr.Beastforpresident]

Y'all recommend changing Sparkplugs every 15-20, 000 miles???? Meanwhile on a Chevy Cobolt go 100, 000 miles.