E3Spark Plugs E3.68 Premium Automotive Spark Plug with DiamondFIRE Technology for Hemi Engines, 14mm, 1.000" Reach, Gasket Seat, Pack of 1

Actually increased the gas mileage in my Rav 4

I haven been aware of this new design for some time now through YouTube and E3's own website and have been curious about using these plugs. Since there are no E3 retailers in New Zealand that I'm aware of, I'm glad to find them through Amazon. I used these plugs in a 05 Mercedes C180 Kompressor as a OEM equivalent as per E3's online catalog. They were as simple to install as regular spark plugs. No gapping required with the electrode design. They were significantly cheaper than the OEM NGK platinum plugs at only a fraction of the cost, even when i include shipping. I've driven for 2,000kms on the E3's now and they perform just like the OEM plugs. Whether they produce more power or save fuel I cannot be certain but I'm more than satisfied that they saved me the purchase price of the very expensive OEM plugs. I hope they will continue to perform with a similar durability and service life and I guess with that time will tell but so far so good.

Very Very bad packaging !!! The plugs were thrown into a shipping envelope in their original cardboard box. Each plug in it's own little box! When I received the package and opened it 5 of the 8 plugs were out of their box and loose in the envelope. Problem is although they look OK, no porceline cracks I will not know if they are good until I install them.Good job Amazon.I've used E3 plugs in the past and found them above and beyond other brands.

Just what I needed, I was needing to change spark plugs and i went with E3, glad i did, ane very fast shipping, i recommend the NEC and will be buying from them again.

Using these in all my BMWs

Have gotten for a few vehicles before and decided to again helped with power, efficiency, and mileage for sure.

I have a set of this in my 2015 Prius. They have over a 100,000 miles on them and they are still rockin and rolling in that car with over 219000 miles on it. I put a set in my wife’s 2018 highlander with 97000 miles on it. So it will be a while before I change plugs again. Damn good product from E3 products

Compatible with the 3.5 v6 Tacoma so I installed them. Later learned in the service manual to use ONLY IRIDIUM Plugs. These sicken the engine ,.... .rough idle, poor acceleration, felt a miss occasionally, lost some hp/mpg. Purchased Denso IKBH20TT plugs which fixed everything. Worse part, installing plugs in the Taco is grueling but do it twice is torture.( the design of the E3s are archaic, like arming WW2 soldiers with flint locks rifles.) Install the E3 plugs if you insist on ruining your engine.