⚡ Ignite your Ford’s power with precision and durability!
The MAS Set of 8 Ignition Coils with Brown Boots (DG521) paired with Motorcraft SP-509 Spark Plugs offers a direct OEM replacement solution for Ford Expedition, F-150, Super Duty, and related models (2008-2014). Designed with high heat-resistant materials and engineered for high energy output, this set ensures reliable ignition performance, improved fuel efficiency, and long-lasting durability. Easy plug-and-play installation and a 1-year limited warranty make it a smart upgrade for professional-grade vehicle maintenance.
| Brand | MAS |
| Vehicle Service Type | fd 509 |
| Item Weight | 4 Pounds |
| Connector Gender | Female-to-Male |
| Installation Type | Plug In |
| Manufacturer | King Auto Parts |
| UPC | 716253448499 |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Part Number | C1659, DG 521, FD-509, 5C1716, 8L3Z12029A / 8L3Z-12029-A, C1659, GN10233, 5C1716, E509, 52-2071, IC697, 8L3Z-12029-A, HJFS-24FP, SP-509, SP509 |
| Item Weight | 4 pounds |
| Package Dimensions | 11.22 x 9.84 x 3.66 inches |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | DG521SP509 |
M**L
perfect Kit
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.
A**R
Worked well the first time!!!!! Parts were great
Very happy with parts, all installed and works well
D**U
MAS Ignition Coil Set (DG521) and Motorcraft Spark Plugs (SP-509)--Don't be fooled by affordability
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.
T**D
Good quality
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
V**2
Coil packs and plugs
As described,fast shipping !!
R**D
Genuine OEM Plugs... MAS is not Motorcraft but doesn't claim to be
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.
D**G
Good
Very good muy bueno
O**R
Easy to install
They fit perfectly.
Trustpilot
3 days ago
2 weeks ago
