Autolite Iridium XP Automotive Replacement Spark Plug, XP605 (1 Pack)

They work well, holding up nicely, I'll post back after 50k won't be long for me.

Truly excellent spark plugs.Regular, Platinum and Platinum Plus all wear out in 12-15,000 miles.These have 40,000 and still start my Ford like I put them in yesterday.I do not know how long they will last. Yet they are by far the best spark plug formy minivan. I have a Ford Aerostar which changing the spark plugs is very difficult and takes hours, really hours.So I spend the extra money to buy more time between changes. So far I have gone 3x the miles and no need to change them out.I recommend that you replace yours with these for better performance and longer replacement cycles.Be sure and use antisieze on the threads and dielectric grease on the boots for easy removal later.

Ordered 8 plugs for my truck. Received the two boxes of four as expected. However one box has limited lifetime warranty and the other box has 7 year limited warranty. Plugs themselves are also different in their brand stamping. Unclear whether this is old new stock or ? but returning just the same.

Just as ordered, installed easy in my 99 Tahoe and work great. As good as the OEM AC Delco plugs

After installing this plugs in a used Mustang 3.8 I recently purchased, the difference is like night and day. Definitely have more power and better gas mileage. I am a believer in Iridium plugs and have used them in my previous car for which Iridium plugs were recommended by the dealer.While I do not believe any plug can really last 100,000 miles as some claim, these should be the last plugs I need to buy for my Mustang. They will last longer than standard plugs and do so without fouling, unless, of course, your engine has other issues that should be addressed. Regardless, I am pleased with my purchase and highly recommend them. They do cost a little more but isn't your "baby" worth it?

Not the best, but great plugs indeed. I was looking for NGK iridiums for my buick. There just wasn't any available for that car. So i gravitated toward the autolite iridiums. I've tossed them in a dynasty before, and they were spectacular.I'm not so much about OEM these days. There is stuff that's better than what the manufacturer used. I don't expect these plugs to be too much better than OEM, except for the fact that iridium has superior change out periods compared to platinum. That is why i bought these.

Delivered in time and works good.

Relatively quick delivery and top quality product