Premium DiamondFIRE Electrode Automotive Spark Plug
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E3 Premium DiamondFIRE Electrode Automotive Spark Plug

Part No. E3.58 Warranty Details  

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E3 Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new E3 spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines.

Product Features:
  • E3's DiamondFire edge to edge electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle - The faster flame initiated by the E3 spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy - Power output improved by 6% on average in the typical operating ranges
  • Efficiency - E3 "diamond shaped" side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and longer flame kernel
  • Emissions - E3 provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • E3 Spark Plugs are pre-gapped at the factory to meet O.E. requirements
  • E3 Automotive spark plugs are warranted to be free of defects in material and workmanship for a limited 5 years or 100,000 miles from the date of purchase. This warranty does not cover plugs installed in any modified engine or used in any racing, aircraft, or commercial application. Spark plugs damaged by abuse, accidents, or improper installation or applications are not cover by the warranty.
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Electrode Core Material:Copper
Electrode Tip Material:Nickle
Insulator Type:Ceramic
Reach:0.750 in
Resistor:Yes
Seat Type:Gasket
Shorty Spark Plug:No
Thread Diameter:14 mm
Tip Configuration:Nickle
Type:Automotive
Wrench Diameter:0.813 in

REVIEW SNAPSHOT®

by PowerReviews
E3Premium DiamondFIRE Electrode Automotive Spark Plug
 
3.3

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (4)

63%

of respondents would recommend this to a friend.

Pros

  • Easy to install (7)
  • Improves engine efficiency (6)
  • Increases power (4)

Cons

  • No improvement in performance (3)

Best Uses

  • Everyday driving (4)
  • Performance driving (3)
    • Reviewer Profile:
    • Casual driver (4)

Most Liked Positive Review

 

Incredible Product

I've installed these in two Jeeps now. Smoothed out the engine idle & acceleration. For the price, its a cheap and fast way to restore lost performance to an engine.

I've installed these in two Jeeps now. Smoothed out the engine idle & acceleration. For the price, its a cheap and fast way to restore lost performance to an engine.

VS

Most Liked Negative Review

 

Not worth the money

Hello,

I read mixed reviews on these plugs, but decided to get them anyway. I thought if they worked then it would have been a good investment, but they did...Read complete review

Hello,

I read mixed reviews on these plugs, but decided to get them anyway. I thought if they worked then it would have been a good investment, but they did not. These plugs are overpriced pieces of garbage. The only good use for them is to take up more space in a dumpster. Never again will I ever buy these again worst mistake ever. Stick with the cheaper plugs they work better, and will not fail you for performance or price.

Reviewed by 10 customers

Displaying reviews 1-10

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5.0

Awesome plugs!

By 

from Central Louisiana

About Me Auto Enthusiast, Truck Enthusiast

Verified Buyer

Pros

  • Easy To Install
  • Improves Engine Efficiency
  • Increases Power

Cons

  • Relatively Expensive

Best Uses

  • Everyday Driving
  • Performance Driving
  • Replacement

Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

I have an older Ford 302 CI (5.0) originally in a 71 Mustang. It is in a 77 Jeep CJ 7. After adding a torque cam from comp, I was having trouble getting all the fuel to burn in the cylinders with the increase in the intake valve lift and duration. I was dumping more fuel into the cylinder and the stock AC plugs were not burning it all. After numerous attempts at carburetor and timing adjustments. ( I replaced the original distributor with an HEI) It was still not burning all the fuel, getting some black smoke and some stalling, specifically at take off and low end of acceleration. I changed to the E3 plugs and the problem was eliminated immediately. It now accelerates smoothly and faster, no more black smoke from unburned fuel. I also get better mileage. Even though they are about twice the price of AC or Champion plugs, It's one of the least expensive performance and efficiency enhancements that you can make. I think 8 plugs cost me about 45 bucks. I am sold on the plugs and recommend them often.

Comment on this reviewHelp Icon

(1 of 2 customers found this review helpful)

 
1.0

junk

By 

from Clarksburg, WV

About Me Casual Driver

Pros

  • Easy To Install

Cons

  • Decreases Gas Mileage
  • No Improvement In Performance

Best Uses

    Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

    Installed in 04 jeep grand cherokee, 4.0 inline 6. gas milage was at 14.7 mpg, installed these expensive plugs and it actually went down to 14.5. been running them for about a month now and no improvement. save your money.

    Comment on this reviewHelp Icon

     
    4.0

    Trying these out

    By 

    from NJ

    About Me Jeeper

    Verified Buyer

    Pros

    • Improves Engine Efficiency

    Cons

    • Time will tell

    Best Uses

    • Replacement

    Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

    I have a 03 Rubicon. They say these plugs aren't jeep friendly. So far so good. It's been 2weeks so far.

    Comment on this reviewHelp Icon

    (3 of 6 customers found this review helpful)

     
    5.0

    e3 spark plugs

    By 

    from wilkesboro NC 28697

    About Me Casual Driver, Truck Enthusiast

    Pros

    • Easy To Install
    • Galon They Are Great
    • Helpt My Jeep Stopt Its
    • Iget 20 29 Miles To The
    • Improves Engine Efficiency
    • Increases Power
    • I Recomend Them To Anyone
    • It Haz A Great Fuel Eco
    • Now Haz More Power Tork
    • Rought Idleing My Jeep
    • The E3 Spark Plug

    Cons

      Best Uses

      • Everyday Driving
      • Performance Driving

      Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

      I thank I never had a good spark plug until I got the e3 spark plug Werks for all kinds of cars & trucks I thank my truck runs ausome its a 2001 Cherokee sport 4.0l motor runs great try them there great

      Comment on this reviewHelp Icon

      (4 of 8 customers found this review helpful)

       
      1.0

      Not worth the money

      By 

      from Port Jervis, NY

      About Me Auto Enthusiast, Casual Driver, Gear head, Self Made Machanic

      Pros

      • None

      Cons

      • Expensive
      • No Improvement In Performance
      • Not worth the money
      • Ruined Car After Instal

      Best Uses

      • In The Trash

      Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

      Hello,

      I read mixed reviews on these plugs, but decided to get them anyway. I thought if they worked then it would have been a good investment, but they did not. These plugs are overpriced pieces of garbage. The only good use for them is to take up more space in a dumpster. Never again will I ever buy these again worst mistake ever. Stick with the cheaper plugs they work better, and will not fail you for performance or price.

      Comment on this reviewHelp Icon

      (4 of 7 customers found this review helpful)

       
      5.0

      E3 Premium spark plug

      By 

      from Maine

      About Me Casual Driver

      Verified Buyer
      Helpful Reviewer

      Pros

      • Durable
      • Improves Engine Efficiency
      • Increases Power

      Cons

        Best Uses

          Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

          I put in a set four years ago and they didn't give me any problems till it started skipping in hills and not starting good.I never took them out and when I did they looked good but worn beyond working right. Put in the new set and it started right up

          Comment on this reviewHelp Icon

          (5 of 9 customers found this review helpful)

           
          1.0

          E3 spark plugs in Jeep Cherokee

          By 

          from High Point, NC

          Pros

          • Easy To Install

          Cons

            Best Uses

              Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

              I installed the E3 sparks plugs on a 2000 Jeep Cherokee. The vehicle experienced a rough idle and poor acceleration. It could be that one of the plugs were bad but I don't know because I returned them for a set of Champion spark plugs. Jeep ran fine after installing the Champion sparks plugs.

              • Car & Truck:
              • Mechanic

              Comment on this reviewHelp Icon

              (4 of 8 customers found this review helpful)

               
              1.0

              Don't waste your money!!!

              By 

              from Altoona, PA.

              Pros

              • Easy To Install
              • I know not to buy anymore

              Cons

              • Decreases Gas Mileage
              • Engine noise
              • Loss of power on highway
              • No Improvement In Performance
              • Over priced hype

              Best Uses

              • Landfill material
              • To take up space in trash

              Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

              These plugs are pure garbage and a complete waste of money! I lost power and 2 mpg immediately after installing and they cause engine noise through the radio. These are nothing but hype to make people think their vehicle is making more power because they burned [$] on a "performance" plug. Total waste!

              • Car & Truck:
              • Casual Driver, Truck Enthusiast

              Comment on this reviewHelp Icon

              (3 of 7 customers found this review helpful)

               
              5.0

              Incredible Product

              By 

              from Shawnee, KS

              Verified Buyer
              Helpful Reviewer

              Pros

              • Cheap engine tune up
              • Easy To Install
              • Improves Engine Efficiency
              • Smoothes idle

              Cons

                Best Uses

                • Everyday Driving
                • Performance Driving

                Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

                I've installed these in two Jeeps now. Smoothed out the engine idle & acceleration. For the price, its a cheap and fast way to restore lost performance to an engine.

                • Car & Truck:
                • Auto Enthusiast, Truck Enthusiast

                Comment on this reviewHelp Icon

                (5 of 9 customers found this review helpful)

                 
                5.0

                a good product

                By 

                from MD

                Verified Buyer
                Helpful Reviewer

                Pros

                • Durable
                • Easy To Install
                • Improves Engine Efficiency
                • Increases Power
                • Lightweight

                Cons

                  Best Uses

                  • Everyday Driving

                  Comments about E3 Premium DiamondFIRE Electrode Automotive Spark Plug:

                  works fine

                  • Car & Truck:
                  • Casual Driver

                  Comment on this reviewHelp Icon

                  Displaying reviews 1-10

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                  Do you have questions about this product?

                   

                  Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                  2 Questions | 3 Answers
                  Displaying questions 1-2
                  • Q:

                    how many come in a box?
                    bry
                    Asked on 4/16/2012 by bryan from north bergen, nj

                    1 answer

                    • CUSTOMER CARE

                      A:

                      This part E3 Premium Special Electrode Automotive Spark Plug, Part No. E3.58 manufactured by E3 Spark Plug is sold individually.
                      For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.

                      Answered on 4/17/2012 by Aaron from AAP
                  • Q:

                    I have a 2002 jeep tj 4.0 and when I put these plugs in under low rpm it would misfire but under full throttle or high rpm it would scream!WHY?
                    Asked on 1/17/2011 by KSHEARS from Augusta Ga.

                    2 answers

                    • CUSTOMER CARE

                      A:

                      I would suggest taking your vehicle to a certified mechanic for a proper diagnosis and installation.

                      Answered on 2/8/2011 by David the Dynamite Parts Guy from AAP
                    • A:

                      you may need to have the computer reset, the ECM monitors and adjust to your driving habits so it is not used to the increased fuel economy

                      Answered on 12/21/2011 by mikey from Broken Arrow, OK
                  Displaying questions 1-2

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