E3 Spark Plugs E3.74 Premium Auto Spark Plug with Patented DiamondFire Technology, Pack of 1 Spark Plug
E3 Spark Plugs E3.74 Premium Auto Spark Plug with Patented DiamondFire Technology, Pack of 1 Spark Plug
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E3 Spark Plugs E3.74 Premium Auto Spark Plug with Patented DiamondFire Technology, Pack of 1 Spark Plug

4.7 stars out of 61 reviews
(4.7)|
61 ratings
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Key item features

  • Enhanced Performance: This E3 Spark Plug boosts engine performance, reduces emissions, and minimizes misfires through its advanced design, ensuring the engine operates at its best.
  • Durable Construction: A robust shell protects the spark plug from damage, ensuring long-lasting sparking capabilities, while damage-tolerant electrodes minimize spark gap growth.
  • Superior Ignition: Advanced center and ground electrodes produce complete and efficient combustion, delivering a stronger, faster, and more powerful spark throughout the spark plug's lifespan.
  • Patented Technology: E3's patented Edge-to-Edge ground electrode design has been shown to outperform other spark plug designs, including premium offerings from major manufacturers.
  • Fuel Efficient: E3 developed a line of premium performance OEM replacement plugs focused on improving ignition cycles for a more complete and cleaner burn, contributing to fuel efficiency.
  • Environmental Focus: Engineered to be environmentally friendly, E3 products aim to reduce hazardous engine emissions that contribute to global warming through cleaner combustion.
  • Broad Compatibility: This E3 E3.74 Spark Plug serves as a direct replacement for numerous Bosch, Champion, Motorcraft, NGK, ACDelco, and Nippendenso spark plug models.
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Columbus, 43215
Arrives between Feb 14 - Feb 18
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Sold and shipped by E3 Spark Plugs
4.533333333333333 stars out of 5, based on 30 seller reviews(4.5)
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4.7 out of 5 stars
stars61 ratings32 reviews
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Showing 1-3 of 32 reviews

Jan 11, 2026
Walmart customer
5 out of 5 stars review

Seller Verified Purchase

E3 spark plugs are excellent.

[This review was collected as part of a promotion.] I recently purchased E3 spark plugs for my 2014 3.7L Mustang and noticed an immediate improvement in running and mileage so I also replaced the plugs in my 1977 Pontiac CanAm 455 V8 and the difference in cold start, idle and at speed was remarkable. Highly recommended!

Review from e3sparkplugs.com
Helpful?45REV29DSIJT581120312
Apr 10, 2025
James A Brantley
5 out of 5 stars review

Seller Verified Purchase

The only plugs for me!!

[This review was collected as part of a promotion.] I heard about these plugs from a friend ordered them for my STX with a coyote couldn't believe the difference they made in fuel efficiency and power so I ordered some from my 13 Mustang GT same positive outcome love these plugs!!

Review from e3sparkplugs.com
Helpful?45REV29DSIJT581120312
Dec 5, 2025
Escape from Minnesota
5 out of 5 stars review

Seller Verified Purchase

Misfire improvement

Trying to solve a Ford Ecoboost misfire problem. The E3's definitely have improved the performance and mitigated the misfires to some extent.

Review from e3sparkplugs.com
Helpful?45REV29DSIJT581120312