What I like about this product is its fantastic price and its convenience. I wasn't sure if they would be the same quality as the original part but I took the risk anyway and so far I'm happy with my decision. The price was great for a set of 8. I paid $50 for one, just insane. I also bought new spark plugs when I installed new ignition coils. I've got about 300 miles on them so far and my Ford Expedition is running fantastic. I feel like a new car with more horsepower where it used to be sluggish and my fuel consumption has increased slightly. I haven't done a full mileage test yet, but so far I'm very happy with this product. Installation is pretty easy once you know how to remove all the crap that is on your engine. Removing the old coil packs was a bit of a challenge since they were welded to the top of the spark plug, but once loosened and removed the new ones just popped up. I've ever had to take them off in the future. I've put some Electro Lube on the inside end of the coil pack where it contacts the spark plug and also put some Aeroshell 33 high temperature grease around the sleeve on the outside where it contacts the engine . My opinion would be like an anti-seize action and the coil pack should in theory just pop out without damaging the coil pack itself or the boot. Let's see what the future holds for this product and for now I am very happy with my purchase of this product and would recommend it to anyone who needs a coil pack replacement.
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