Your cart is empty.
Your cart is empty.SP594 CYFS12YRT3 is the most current version plug that replaces the SP578 CYFS12YPT
Ty B
2025-08-10 10:26:30
Bought these for my 2021 f150. Direct OEM replacement! WARNING: sometimes later in 2021 (depends on your build date) ford changes the plug style a little bit and the part number is slightly different. If you look up your vin, both will come up. Only way to know is look at your build date, or pull one of your plugs. You can try taking it tot he dealer and asking them but no promises they know what’s actually going on.These are the first plugs I ever bought that come with a plastic protector to protect the gap size of each plug. Brilliant! No more gapping plugs manually. I’ll still check them. we between these and for performance plugs for a bit more, but I didn’t see the reason to upgrade for what I do. Helped my slight rough ideal a bit, but normal on ecoboosts to an extent.
Scott King
2025-08-03 15:51:37
Good product and great quality and price
Customer
2025-07-23 18:44:39
Genuine Motorcraft plugs by NGK. These came pre-gap and they have a coat of anti seize on them. Do not need to put extra anti seize on. My 2019 Expedition requires to swap spark plugs every 60k miles and I gained about 1 mpg.
Jo Lage
2025-07-12 13:44:16
The plugs are fantastic the truck runs so smoothly.
Kathleen
2025-04-22 14:57:15
Claimed 6 pack but only one plug showed up. Was easily returned but I had to find more and my project was put on hold until more arrived.
pluto
2025-04-01 11:18:44
Local Ford dealership wanted 579.00 to replace plugs. I asked them if they were crazy? So I ordered these from Amazon and put them in my f-150 2.7 eco boost. First time doing this myself . My Ford runs like a scaulded dog now.
Lou
2025-03-22 18:13:00
I called dealers in my area and they all confirmed that the plugs were these for a 3.5 ecoboost 2017. I removed the old one and noticed the part number different, but size, thread, ceramic, gap were all the same. Replaced all 6 and started no issues, no codes, all good for now. Can't tell the difference in performance tbh, but from the looks, it seems like it needed to be done.
Alexis Alvarez
2025-01-15 10:12:09
Fast deliver original motor craft for my 2021 power boost 6/21 build date
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