The most right spark plug in the picture is the one that caused the engine misfire

Its a good spark plug but don't believe the hype

Other than that good spark plugs ive had them before on different vehicle’s.

It was not the right spark plug for the year make and

The major misfire turns out from being a spark plug that broke in the cylinder and lost the electrode and crown (these pieces remain in the cylinder causing the knocking sound)

Great spark plug, I used these in my other vehicles and they run so much better

This helps reduce that factor by giving more miles to the fuel equations with a more dependable spark for ignition

The right 3 spark plugs clearly show slow failure to complete failure

Every few years someone tries to reinvent the wheel, or in this case spark plug and fails

These are no doubt the best spark plugs on the market

don't fall for any gimmicky spark plugs.

Very good spark plugs make a big difference on engine powere and smooth running.

Strong spark I can feel the difference

I put high temperature silicone on the boots and top spark plugs and anti size on the tread of spark

The best spark plugs I've ever bought

Great spark that energized my charging system

Those engines don't need to be managed by a computer; it just needs a consistent spark to operate