E380 E3 Premium Automotive Spark Plugs (4-PACK)

I put these plugs in everything. Potential for better gas mileage, horsepower? they wear well, no need to gap them.

I had a spark plug misfiring in my vehicle so I bought these spark plugs and they were much cheaper than the auto parts store wanted to charge me and better quality. I installed these and I notice the increased horsepower and no more check engine light.

New updated post.So as seen on other posts for this product I am also having misfiring issues. I’ve taken my car to my favorite mechanic for diagnosis. When I mentioned E3 plugs they immediately said those are garbage and probably the issue. They have already replaced the E3’s in other vehicles and now I’m going to too. I will update my post with the outcome. I’m going back with the OEM Denso plugs.Old post when purchased.I decided to purchase these after seeing a review on YouTube. The item pre-purchase said it would fit my 2015 KIA Sorento. When installing I removed one plug and checked the dimensions. It was exactly the same. I can say for a fact I am getting better gas mileage, my engine runs smoother and acceleration is more responsive. My original factory plugs had over 144,000 miles. I recommend these plugs.

Good for car

Saw improvement in mileage and power after installing on 60,000 maintenance on 2014 Hyundai Santa Fe 2T

Ordered and installed on 2018 kia soul+. Began misfiring after only~10k-15k miles at most. Car is maintained well and regularly gets fuel injection cleaner or premium fuel to keep fuel system functioning. Engine started running poorly and took to mechanic, suspecting another underlying issue. They read rpm telemetry, checked coils, checked fuel pressure. They replaced spark plugs with OEM and engine runs perfectly now. Never again!

These plugs ended up with significant carbon buildup and caused my 2011 KIA Optima to run rough. I replaced them with the original plugs and the car runs fine again. I cannot recommend them to anyone.

The plugs caused my engine light to come on after 20 miles, I changed the plugs to NGK brand and the problem went away about 10 seconds after I turned my car on.

I notice a difference as soon as I put the plugs in very satisfied with my purchase

Junk spark plugs. 1 was immediately bad right out of the box. I'm a mechanic and I know what I'm doing and i definitely don't recommend these. I've heard mixed reviews and I thought Id try them for myself sure enough these are a joke. You're better off with champion or autolite plugs before you spend more on these