8 PCS NEW --- DENSO # 5325 IRIDIUM Power Spark Plugs -- IT16

Great plugs for the price. My gas mileage had dropped off significantly, lately. I was having an occasional misfire...trouble starting in the morning... All of the signs that a spark plug or eight were failing. So, After reading many reviews and checking my wallet, I decided on Denso Iridium spark plugs. I had been an AC Delco man, well let me tell you, these plugs are awesome. They come packaged, pre-gapped. (I know because I double checked them.) They have a plastic tube protecting the gapped end. And a box for each plug. I've only had them in about a week, so I can't comment on longevity, but the performance has been undeniable. I will definitely get Denso's for my 2nd car, when plugs are needed. I have received no compensation for this review, but I will happily accept 6 plugs for a Chrysler 3.8 liter. (You know...the 2nd car) ;)

They went in like butter into somewhat rusted threads. Engine runs the same smoothness but it definitely drinks less fuel.

these work great it fix my problem i was having with my 2006 chevrolet silverado ext cab LT flex fuelit was running rough, i bought a new set of ac delco professional spark plugs and they were no good so i bought these they work great

The Denso plugs have a larger profile where the socket grabs which makes them less prone to rounding out or getting stuck in the head.

proper plugs for 5.3 ltr GMC V8 engine, disliked how hard they are to install even with the right tools!

These have seemed to up my gas mileage quite significantly. I went from about 12mpg to about 15mpg.

Save me some money from autoparts store.

This were great replacements for my oem plugs. I put these on before traveling 2500 miles and my Suburban ran great. The price was right and I feel like these will last a long time. I've always been happy with Denso.

Ok