OverstockDirect Genuine OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3

Ordered these for a F-150 2.7L. After I ordered I read about counterfeit spark plugs from Amazon and started to worry. After receiving these I was able to verify that these are indeed original OEM plugs. Truck has 100,000 miles and after installing these my truck runs a lot better. Recommend. Thanks to OverstockDirect for selling OEM parts at a good price.

Great price and received in super fast time. OEM ford spark plugs not knock offs. Just as described. I recommend this seller.

Perfect fit for my 2018 ford f150 ecoboost. Just hit 150k on my truck and thought this was a cheap and easy preventative maintenance item to do. Only took me about a half hour to change them. Would buy again

It was as advertised. Legit Motorcraft plugs, meaning OEM durability. Gap was accurate on them, which in turn made it easier to install. Better performance and power. The old plugs I replaced had 80,000 miles on them.

These are exact as OEM and are the correct product. Performance and functionality all match and fit perfectly. These are not fake knockoffs like I have seen with some other products.

Excellent spark plug after my engine was running rough and I had a miss I was over 100,000 miles I replaced my spark plugs for these open plugs and now I can feel my engine run most of the time. I will only use these open plugs from here out.

Works perfectly for my 2.7 ecoboost (2018 F-150). It took my roughly 6 months pregnant self about three hours to install, start to finish. After the grave mistake of allowing a Tire Discounters to do an oil change on my truck while I got new tires, I was having lots of issues with misfiring and my truck randomly stalling, usually coming off the interstate. That’s really not fun when you have your family in the truck with you and you’re hours away from home, heading out west to Utah and California. Oh, and you’re pulling a horse trailer. Anyways, once we arrived in Utah, we had the truck looked at. The oil had been grossly overfilled (how in the world do you manage that???) so an oil change was done and things got better… mostly. But the misfires were still an issue. We stopped again because we could hardly get above 35mph without the truck shuddering and freaking out. They narrowed it down to bad spark plugs. They replaced them and sent us on our way. Now the issue was much better. However, after less than 8,000 miles, we started having misfires again. My truck had been misfiring for quite a while, and while I believed it was the spark plugs, the next shop I took it to said it likely wasn’t. Not wanting to gamble $500 off of my best guess, I just bought these and the necessary tools to do the installation myself. I bought a spark plug… thingy… (I forgot the word, sorry, baby brain) form Menards, but I found that, while it was great for taking the spark plugs OUT, it was not good at putting the new ones IN, as it wouldn’t let them go without leaving the aforementioned thingy in there. Thankfully, I had a Quinn brand set of thingies, and the right size was in there. That one worked much better for putting the spark plugs in. Once I had that issue figured out (that was the bulk of what took so long - trying to get the spark plug, and only the spark plug, in) the installation went very smoothly and quickly. I then drove my truck straight through to Oklahoma from Kentucky with a horse trailer, and then straight back to Kentucky the following day. No more misfires! I have also driven, again with a horse trailer, straight through from Kentucky to New York without a single incidence of a misfire. I think I’ve done about 10,000 miles with these, and I’ve not had a single issue! I have included a photo of these side-by-side with the spark plugs I removed. So glad I listened to the forum conversations I read and bought OEM! My truck seems much happier, and they have already outlasted the non OEM spark plugs that were installed before.

DO NOT BUY. I ordered these and went to replace my spark plugs after not opening the package for a few weeks to find used spark plugs in my “new” packaging. Because I waited a few weeks to open I missed the return window and could not get my money back. Don’t waste your time or money with these.