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E3 Spark Plugs E3.68 Premium Automotive Spark Plug w/DiamondFIRE Technology (Pack of 1)

  • Based on 363 reviews
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Availability: 12 left in stock
Fulfilled by Amazon

Arrives Wednesday, Jun 12
Order within 21 hours and 13 minutes
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Features

  • Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions
  • E3's patented DiamondFIRE edge-to-edge electrode provides maximum performance with increased efficiency, and a faster more complete burn
  • Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for a reduction in side wire temperature for less pre-ignition
  • Includes one (1) E3.68 spark plug with a limited lifetime warranty
  • Primarily used in a wide variety of automotive and truck applications

Description

The E3.68 auto spark plug is a 14mm, 1.000” reach plug with a gasket seat. It fits a wide variety of late model applications, especially Hemi applications. E3.68 is widely stocked in automotive retail stores. E3 automotive plugs have three legs securing the DiamondFIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented DiamondFIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use. The unique ground electrode and full-size center electrode also provides optimal performance for a guaranteed five years or 100,000 miles. Part Number: E3.68; Resistor: Resistor; Hex Size: 5/8"; Thread Reach: 1.000"; Thread Diameter: 14mm; Seat: Gasket; Tip/Gap: DiamondFIRE Fixed Gap Cannot Be Adjusted. Our unique DiamondFIRE open design forces air gap discharges, creating the preferred edge-to-edge spark path. The design allows replenishment of the spark zone with a fresh fuel/air charge, and exposes the flame front more directly to the piston head than other plug designs. This distinctive spark plug design has proven to simultaneously increase engine power output, reduce gasoline consumption, decrease hydrocarbon and carbon monoxide emissions from the engine, and materially extend the life of the spark plug. Our lawn and garden spark plugs help engines operate more efficiently with a faster and smoother acceleration.


Brand: E3 Spark Plugs


Core Material: Copper


Gap Size: 0.04 Inches


Thread Size: 14mm


Top Material Type: Alloy Steel


Brand: ‎E3 Spark Plugs


Core Material: ‎Copper


Gap Size: ‎0.04 Inches


Thread Size: ‎14mm


Top Material Type: ‎Alloy Steel


Vehicle Service Type: ‎Car


Manufacturer: ‎E3 Spark Plugs


Model: ‎E3.68


Item Weight: ‎0.01 ounces


Product Dimensions: ‎6.55 x 1.65 x 1.45 inches


Country of Origin: ‎China


Item model number: ‎E3.68


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎E3.68


OEM Part Number: ‎E3.68


Date First Available: January 2, 2007


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • E3’s
These work well.
Reviewed in the United States 🇺🇸 on June 8, 2023 by J. Andres

  • Amazon did not package the product properly!
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. ... show more
Reviewed in the United States 🇺🇸 on March 1, 2023 by Bob Schmidt

  • Muy buena tecnologia con la que esta diseñado
Me gusto la fuerza con la que reslonde el motor de mi auto al cambiar las bujias viejas por estas nuevas
Reviewed in the United States 🇺🇸 on December 20, 2022 by CESAR A MONTANEZ SALGADO

  • Exactly what was needed
Item was exactly what was needed.
Reviewed in the United States 🇺🇸 on November 2, 2022 by Christine

  • Great OEM substitute
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. ... show more
Reviewed in the United States 🇺🇸 on January 14, 2014 by Stan

  • New brand and great results.
Works as intended and promised. On independent tests, outperformed better brands, including original Japanese brands. Expensive but worth it
Reviewed in the United States 🇺🇸 on June 23, 2022 by Gustavo

  • Value for your money
Value for money
Reviewed in the United States 🇺🇸 on September 14, 2022 by Lisa Menns

  • Spark plugs
Those spark plugs are junk since I bought them till today December 18 /22 I’m trying to figure out a misfire and all this time was the new spark plugs today I change them for new NGK and the misfire went away , the car had a hard time first in the morning to get it running I had to seat in the car for five minutes before the car run little better and then let it warm up for 15 minutes. ... show more
Reviewed in the United States 🇺🇸 on December 18, 2022 by Moises M.

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