ENA Set of 8 Curved Boot Ignition Coil Pack Compatible with Ford Lincoln Mercury 4.6L 5.4L V8 Replacement for DG508 C1454 C1417 FD503 1L2U12029AA I2LU-12A388-AA C1417 DG473 DG481 DG491

Don't let the price scare you, these are holding up better than the name brand ones I just replaced, were on 4-5 months now , ZERO issues ZERO misfire codes, highly reccomend

Had to 'whittle' a little on a couple of them,so the harness would lock; perfect fit and operation otherwise. Sold the truck June of 2025; no issues.

UPDATED Sept 22, 2020, after putting 700 miles on my car. SOHC 4.6L engine efficiency has remained improved by 3-5%! An incredible deal. I remain skeptical that these coils can stand track speed use though as they aren't as beefy as the OEM Ford coils—if I do get this car to the track, I'll keep an eye on performance and update this review (don't hold your breath on that though…this isn't a manual tranny GT so not really a track car).At first, my buddy and I were skeptical that this would really be a good replacement for the failing original ignition coils in a stock 2002 Mustang GT. Immediately, these new ENA coils improved the engine efficiency by an estimated 3-5% from the old, 18 year old coils. See rest of review for my thoughts and specific experiences with this replacement.Why the replacement? Old coil on the #1 cylinder started throwing a P0301 fault (and also a pending P0316 code) back in May 2020. Besides the #1 coil being an obvious issue, hecking other old coils I noted several with torn boots, one besides the #1 with obvious moisture on the boot—the #1 coil was the worst though by far, the only one throwing an engine fault code and there was a lot of water build up in the well from its failed boot. This Mustang had new plugs put in last year so I also checked the #1 plug and it tested fine and was gapped properly, etc. Decided to try out a full set of these ENA coils as it was cheaper to get 8 new ENA coils than getting one OEM ignition coil to just replace the #1, at least two other coils had torn or failing boots, etc so this was a really low risk purchase decision since I figured I could just swap boots if the new coils themselves were not great.The ENA coils are slightly less bulky than the OEMs and were relatively easy to install. At first I only did the driver side, the easy side on the Mustang… where I had temporarily moved the failing #1 coil to the #2 cyclinder while I waited for these new coils to arrive. As soon as they did arrive, I immediately replaced the driver side coils (#2, 4, 6, 8) with these new coils. That improved things a little on the engine and got rid of it throwing a service light when under serious engine load (heavy acceleration with high RPM); definitely that #1 coil had been out of spec (and that was verified by using a multimeter on that old coil's resistant circuit as well). Replacing the passenger side ignition coils completely the following week saw a much greater improvement…Now the Mustang's RPMs at load are 3-5% lower to achieve the same amount of power/ maintain cruising speed with the cruise control on, etc than they were before! When coming to an idle when a lot of the electrical load on the system zeros into the correct resting engine idle speed at rest much quicker than before. Also, the exhaust has much less water condensing on the rear tail pipes, etc, etc. After I had finished work on the passenger side and was trying the engine out for the first time, a neighbor walked by and said the GT sounded like a kitten… a true improvement! So, WOW, so glad I decided to replace all the coils and not just the one that was testing out of spec!I'm really appreciating how smooth the engine and transmission now work together. Based on the raw RPM efficiency number improvements, I'm expecting at least a 1MPG improvement over the old failing coils with the car in the 40-70 mph range. Acceleration is smoother than ever. Not a single bad thing to say about these coils so far. Well, okay, maybe one thing…The spring contact for the plugs are slightly shorter than the older coils. This might be due to sag on the old coils over time. That and the lightly less beefy boot and coil body are the main differences from the stock coils. I got the black ones but if you want to jazz up your engine block, maybe get the color ones that cost a few dollars more? The black ones look closer to the OEM versions so I went with those because I'm trying to keep this vehicle as close to stock as possible. Anyways, now to that one thing that is really is bothering me since the swap… Now that the ignition coils are making the engine work so smoothly, I can sense that one or more of my stock injectors is probably gunky… it's a never ending story with these cars; thank heavens there's deals like these ENA coils! (And I highly doubt that trying to clean or replace the injectors give me a 3-5% improvement efficiency so it's sort of something I might work on if I have to do deeper work on the engine in future, not immediately).

Update #1: Just did a full gas tank run. Previous mpg was 20.3 combined. Filled up with the new coils and now I'm at 21.3 mpg. So these coils indeed improved my mpg.Update #2: Over 2000 miles so far and still no sign of any misfires or issues. So far they are indeed paying for themselves.My 01 Grand Marquis still had the original Motorcraft ignition coils mixed in with some unknown brand ones. At 126k miles i decided to change them all out (sparkplugs we're done at 121k).I did notice after my car warmed up the idle was a bit erratic. Power also felt a bit sluggish recently. I had no check engine light but I could feel something was off. Now I am skeptical: $29.99 for a set of eight coils was suspicious. But seeing the thousands of reviews and positive feedback I gave it a shot.Ordered on Tuesday and got it Thursday. Inspecting them, they are blank, and look generic but definitely don't feel like it. The boot also was a bit longer than the originals which I like because that means it'll not only cover the sparkplugs more but seal on the engine block better to prevent debris and moisture from getting in. They also included a packet of dielectric grease which was plenty for my application. The whole ordeal took 25 minutes. Unbolt, pull out, grease the new ones, push in, bolt in, plug in, repeat 8x. Even though I've heard mixed things about ENA items I was still impressed with the quality of the coils.Now the moment of truth. After triple checking everything, I went inside and started it up. Immediately, I noticed how stronger the start up was. It idled funny for maybe 15 seconds as expected and then smoothed out like butter. Taking around the city and on the highway I definitely felt and saw a improvement on acceleration. It's definitely running much better. I previously used to get 20.3 mpg combined so I'll update whether I see improvement in mpg. When warmed up the idle is virtually undetectable. Sometimes it makes me wonder if the car is on it idles so smooth. So out the gate, I'm impressed.Now, I've only put 50 miles on the coils so far. I'm highly curious about the longevity of these coils so if any fail prematurely I'll update. But nothing so far that shows otherwise. If you have a Ford V8 that uses curved boot ignition coils definitely check these out. Time will tell if their low price reflects their longevity but as of currently I'm satisfied. I recommend them.

I got these since I was going to have it apart for a broken manifold swap anyway. The price was GREAT and I figured I could not go wrong. After I ordered I saw some installation videos and they said to stay away from these connector problems and coil fails right out of the box. I got worried and read some other reviews that said the same thing. Once I got into the project I went back and forth on reusing the old coils and just using the boots to avoid the coil issues reported. Ultimately I decided to go for it. Great Choice!. The install was easy. Used the dielectric grease as recommended, made sure they seated properly and torqued as recommended. It has been a month and a half and the truck runs better that ever. Perhaps time will tell but for now, plenty happy.The only reason these were not 5 stars was that as noted the molding flash on the plug connectors was pretty bad. The plugs are snug so in some cases they would not snap in place. Easy solution though. A quick sanding pass on a flat surface with some 600 grit sandpaper on the plug face knocked the flash off easily. After that little prep work the install went fine. 5 Stars if they clean up their connector mold!