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Your cart is empty.The E3.68 E3 Premium Spark Plugs are a high-quality, durable option for your vehicle's ignition needs. These spark plugs feature a ceramic core material and a 14mm x 1 thread size, ensuring a precise and secure fit in a variety of import and domestic applications. The E3.68 spark plugs are widely stocked in automotive retail stores and are backed by a guarantee of five years or 100,000 miles. The unique DiamondFIRE electrode design increases power, reduces fuel consumption, and improves hydrocarbon emissions over time. With a resistor and gasket seat, these spark plugs offer excellent heat transfer and create more turbulence in the cylinder for optimal performance. The package includes eight spark plugs.
Shirica Rampersaud
Reviewed in the United States on March 22, 2025
Good quality
Andrew Castro
Reviewed in the United States on April 12, 2025
Perfect and increases gas mileage and change soon after installation was notably and produces better conductivity then most spark plugs.
David Haynes
Reviewed in the United States on September 29, 2024
Never tried the product Mechanic told me they were garbage plugs and he refused to put them in. My problem is it took me several weeks to get a refund? But yet it took you less than 30 seconds to take my money 🤷♂️
an owner
Reviewed in the United States on November 1, 2024
Ran great in truck, installed in 6.4L HEM.
Roses
Reviewed in the United States on April 26, 2024
Working good
Summer W.
Reviewed in the United States on June 26, 2023
Bought these for a nissan titan that really did not need them but I thought why not. After some reviews I thought I will try this out. They worked great for a couple of weeks and then I started to have a miss in my truck. Pulled coil packs and found one melted so replaced it. Today a week later started having severe miss on the highway almost did not make it home. Pulled the same coil pack found it totally melted. Then I pulled the plug and found the glass was spining in the metal socked of the plug the electrode in the plug spins freely and looks like it is about to fall out. Not sure if these have a warrany or not but this one plug has cost me two coil packs and could have cost me a engine. buyer beware. I like the idea of these but not happy with the results of them
ponyxpress79
Reviewed in the United States on January 2, 2023
Put these in when I did the motor. Did a lot of research on line and decided on the E3. Noticed a little difference but could be the new motor too. Still running these after 18 thousand miles and have had no problem, even when towing. Some people said they would not work in the Hemi, but they seem to be working great in mine. I also have 2 sets of iridium plugs if these decide to get cocky. They came with the motor.
pwink
Reviewed in the United States on November 29, 2021
I installed these in my 2014 Toyota Tacoma (V6) and actually gained about 1 mpg. I check my mileage on every fill up and these have actually made a difference. It's common to 'feel' some improvement when installing new plugs because the old ones are usually ready to be replaced. The units I replaced had about 50,000 miles on them and the truck was running fine but the recommended replacement interval for standard plugs is 30,000 miles. I personally think this is overkill so I go 50,000-ish.These actually seem to perform in my truck a little better than the standard copper core plugs the manual recommends. I know this sounds like snake oil and a spark plug shouldn't make a difference but I'm about 3,000 miles into these plugs and they are consistently giving me about a 1 mpg increase. The truck seems to pull stronger so I can run a gear higher than before on the twisty, hilly roads of southern Indiana.I highly recommend these plugs.
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