Upgraded High Performance Ignition Coil 8 Pack - 15% More Energy - Ford F-150 F-250 F-350 4.6L 5.4L V8 CROWN VICTORIA EXPEDITION MUSTANG LINCOLN MERCURY Compatible - DG508 DG457 DG472 DG491 (YELLOW) Review

Installed them for the Thanksgiving holiday and it has improved my expedition so far. Idling is smoother and acceleration is much better. Fuel economy has improved by around 18-20% when driving smart.

I had these guys installed on an old expedition and several engine check codes disappeared after the second run! I've never ridden it until all the problems were gone! The car has a lot of pep. Installation was a normal task, but the end result was worth it. The price is amazing! For the cost of two spools in the store, it turned out to be a full eight!

I asked for yellow spools when the package arrived on the box it said yellow but when I opened the box they turned out to be red. Since Red had the same part number and price, I installed it. I don't know the difference between them but I couldn't wait for a replacement. Time will tell how they work. Install if everything is ok and fixed some misfires in my 5.4 F-150. The truck still runs perfectly.

Had code P0306/P0316 on cylinder 6 indicating misfire. Bought these coils and replaced all 8 cylinders along with new spark plugs. All error codes have been fixed. Interestingly, the problem was transmission slippage until I finished scanning. I just installed them so can't comment on the increase in fuel economy or durability yet. I'll sign up in a few months. I'm just glad the truck is back to normal and power is restored!

I fitted them to a stock 4.6 V8 in a 2000 Ford Expedition. They went in like butter and have much better weather protection than the stock or some of the cheap ones at RockAuto. The truck has over 200,000 miles and runs like a dream. How much more spark than stock? It's hard to say, but with these and the new spark plugs, the truck is definitely solid. The truck fell face down at about 3800 rpm but accelerated sharply to 5 km. buy you!

I bought these to replace a set of MSD coils that came on my 2000 Mustang GT. I had an issue with them as MSD coils are known to produce an annoying squeak that can be heard through the car's audio system. After replacing them with this kit the hum is gone and the car is much more responsive. It's too early to tell now as the coils have only been in the car for two days at the time of writing this, but I'm happy with the performance. beautiful. I will update my review later if anything changes.

Sun 2010 F150/4.6 Gas Engine Starts Misfires in 1, then 2, then 3 cylinders - all within a few miles! In the first store they replaced the candles (it was found that one insulator was cracked), they didn't fix anything. The second shop thought the injectors were bad (well, with 200,000 miles plus miles maybe so), after the $750 bill, better, but no cigar. Return it in 10 minutes it will change coil pack and now a big difference for the better! Just one roll is $98! (and free work HA! (:<P)).