Denso(5341) ITV24 Iridium Power Spark Plug, (Pack of 1)

For the price I worried if they were knock offs! Nope! I drive focus st and it's got the Ford performance tune which needs the two step colder plugs. Online these usually go for eighty it ninety for the set of four. I was getting a lot of pops and hesitation during cold starts, after putting 25000 miles on the densos that came with the tune, sure enough they were toast. After researching on densos site they actually recommend changing every twelve thousand miles. Changed them out and she's running perfectly again. And for this price it's much easier to change on schedule.

Have put these plugs in since i bought my focus st off the showroom floor. Great plugs!

What can i say? They work. They have worked reliably over multiple sets and cars over the years

Great sparkplugs. The focus st idles better now.

Excellent Spark plugs