What does BPR7EIX fit?

It is a 14 mm thread, 19 mm reach plug with a 5/8-inch hex and a projected tip, the common size for many cars, motorcycles and small engines. Check your owner's manual or the old plug's code to confirm the heat range and reach.

Is it better than a standard nickel plug?

Yes for spark consistency and service life. The iridium tip is much finer than a nickel electrode, so it fires with less voltage and holds its gap longer. It costs more, so the gain matters most on engines that are hard on plugs.

It comes pre-gapped for most applications. If you must adjust it, use a wire-type gauge and bend the ground electrode only, never pry on the iridium tip.

One plug per pack. A four-cylinder engine needs four, a six needs six. Buy the full set at once so all cylinders run the same plug.

How often should I replace it?

Iridium plugs typically last far longer than nickel plugs, often tens of thousands of miles. Follow your vehicle maker's interval, and replace sooner if you see misfires or rough running.