• Please use the year/make/model drop down bar and interchangeable part numbers to confirm compatibility.
  • Please check if your boots are curved or straight. The months are important along with year of manufacture. DQ50101 is for Curved Boots and DQ50101D is for Straight Boots
  • Our replacement ignition coils are design to be easy to install and contains high quality copper for specific application, low emissions and high energy output. The unique winding design would reduce the size and weight without sacrificing the quality. Each coil is design to eliminate misfires and provide maximum voltage.
  • Other Compatible Part Numbers: 5C1584 E508 3L3E-12A366-CA 3L3Z-12029-BA C1659 5C1584 3L3Z12029BA 3L3U12A366BB 3L3E12A366CA 50082 601000 11054 DG-511 DG511 3L3Z 12029 BA 3L3U 12A366 BB 3L3E 12A366 CA
  • MAS PERFORMANCE IGNITION COILS WITH MOTORCRAFT PLUGS SP546 ,MADE OF HIGH QUALITY.One Year Limited Warranty.

My 2005 Ford F150 FX4 has having some issues with engine misfires and I have constantly had ignition coils go in it here and there since I bought it. I was advised during the last coil that was manually replaced that I should get all of the plugs replaced, and that the shop was going to charge a minimum of $400 (plus extra if some broke). So I bought this kit and had a friend replace all of my coils and plugs and it is driving so much better! Also the fuel economy improved. My last fill up was 15.4 MPG which is a lot better than the 10 or 11 it was getting before I replaced them.

Fit my 2006 expedition 5.4L perfectly. Truck is runing great. 1/2 the price of the auto store. Will update if they turn into junk after they have been in for awhile. The plugs are Motorcraft not sure of the coil packs. But they are working great right now.

Had these installed by a professional since the install difficulty was above my pay grade! The plugs are motorcraft so I expect no issues with them, the coils are aftermarket so I guess that I will have to see how they hold up. Right now the truck is running perfectly and I am quite pleased. Will probably update later as I put some miles on the job! The parts came well packaged with everything there as advertised!

I had a noticeable misfire between 45-55mph while in OD, and suspected a faulty coil...well, the dealer diagnostic runs at least $99 to tell you which one is bad. This entire package cost $134 for all new coils AND plugs...all from Motorcraft...do the math. I changed all of these out the first time four years ago (at 120k miles) and had a heck of a time, took almost a day and a half. Had to go very slowly and use PB blaster to break the plugs free from their threads without breaking any. Did fine, got all eight out without breaking. This time was much easier, took just a couple hours overall. If you have a small mirror and flashlight, compressed air (to blow out debris), a vacuum (also to remove debris), and basic mechanic tools you can do this. This IS the new version of the plugs that is less susceptible to breaking. My truck is at 163k and running smooth as a baby's bottom. Be sure to use some anti-seize compound on the threads to make the job easier next time (it did for me), the experts on the forums recommend a nickel-based formula. It's also recommended that you clean the engine internals as much as possible by running one or two tanks worth of Techron through the system before attempting this job.

Before attempting to remove 5.4L 3 valve spark plugs watch videos on YouTube that give you precise instructions. Autolite has a good one. Also purchase the Lisle tool for removing broken used plugs. New plugs and COPs have added power to my 182,000 mile 2004 F150.

Had a misfire happening in my 2006 Expedition, replaced plugs and coils, purrs like a kitten now. Would buy again

Motorcraft spark plugs, NOT Motorcraft coils. Parts DID the job and truck runs better. Read all of what you are purchasing before hitting the submit button.

Best price and all the components look legit. Not sure why or how they are cheaper than most others I found. I installed these in October and been running fine for 3 months now.

I liked the price had a miss on the #7 cyl on a 2007 mustang corrected the problem when I replaced all plugs & coil packs

Everything worked as it should. Truck runs much better.