Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521

Very happy with parts, all installed and works well

Thought coils where motorcraft! That's on me for not reading the info on parts. I would not had purchased if I caught this! Already # 7 coil is having issues less than 1000 miles. China specials.. I will get motorcraft and reinstall. On time delivery !! King auto parts did reach out to resolve the issue, all is good tks for your support. Once again my issue, for not reviewing the parts before ordering.

These plugs and coils have worked without a problem for more than 2 years. Very happy with them. Gas mileage improved by 2 miles per gallon

I gave the MAS Ignition Coil Set a chance to repair some coils that went out on my 2013 Expedition EL because they looked like they would fit and had a healthy 4-star review. The good part of the set is that they're a direct fit for OEM. There are major bad parts about this set though. First, the boots are slightly too large in diameter--while this gives a very good seal in the spark plug well, it makes them difficult to remove. Second, they're lighter and louder than OEM. That may be a non-issue, but you definitely hear the clicking of the coils every time it sparks. Last, the SP-509s are fake. The engraving is etched, not stamped; the numbering is centered on the hex flats instead of near the edge; and the blue printing can be scraped off by a fingernail. The spark plug boxes look legit though--very good job of a fake product. Too bad I didn't realize this until after the return period. What does this do? Well, I assume the parts are failing slowly in the engine, and my usual 15/16 mpg has fallen to 12/13 consistently over 2 months. I think I'm going to take them out and get the real parts before something explodes in my engine. Save your money and get some OEM parts.

Needing a set of plugs and coils on our 2008 F-150, we got these. The plugs are genuine Motorcraft (watch some YT videos on how to tell genuine Motorcraft from fake, or even 'deep fake' packaging and printing markings on the plugs and coils )... and though it doesn't claim to be a Motorcraft part, the coils in this set are MAS brand. (The thing with these year F-150's... is getting the old plug out without breaking them. The newer plugs are designed a bit better, thankfully. Right now we are on the hunt for Motorcraft PM3 Carb tune up spray that helps break up the gunk...where did they all go? ) This set is a good value for price. Not an easy install, but coils/plugs rarely are.

I got my first order but the Coils were completely mission just spark plugs, I asked Amazon and they sent a replacement Quick and the replacement worked perfectly and everything in the kit showed up.

Fixed my issues for a third of the price 2010 f150

Excelente producto ya se instalo gracias