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E3 Spark Plugs E3.38 Premium Powersports Spark Plug w/DiamondFIRE Technology (Pack of 1)

4.4 4.4 out of 5 stars 627 ratings

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Brand E3
Core Material Copper
Gap Size 0.03 Inches
Thread Size 10mm
Top Material Type Alloy Steel

About this item

  • High performance engine spark plug for a variety of powersport applications, specifically 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
  • Proprietary electrode design presents multiple sharp edges to the center electrode providing maximum performance for longer life of this premium spark plug
  • Includes one (1) E3.38 spark plug with a limited lifetime warranty
  • Replaces Champion G57C, G59C; and NGK CR7E, CR8E, CR9E
See more product details

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Price$5.09$6.49$6.49$4.99$3.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Value for money
4.2
4.0
4.5
3.9
4.7
Mileage
4.1
4.0
4.3
3.9
4.5
Longevity
4.1
4.0
4.7
4.1
4.3
Sold By
Amazon.com
Amazon.com
Amazon.com
NorthEast Cycle Shop
Amazon.com
compatible vehicles
Motorcycle, ATV, Snowmobile
Car
Motorcycle
Motorcycle
Race Car
number of items
1
1
1
1
1
1
gap size
0.03 inches
0.03 meters per meters kelvin
0.04 inches
0.04 inches
0.03 millimeters
0.03 inches
thread size
10mm
14mm
14mm
14mm
core material
Copper
Copper
Copper
Copper
Copper
Copper
top material
Alloy Steel
Alloy Steel
Alloy Steel
Alloy Steel
Alloy Steel

From the manufacturer

E3 Spark Plugs

The DiamondFIRE ground electrode configuration 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.

Smoother Acceleration and Idle – The faster flame propagation initiated by the Patented DiamondFIRE ground electrode results in a more complete burn of the fuel/air mixture.

Energy – More pressure is created against the cylinder and more of the available fuel is put to work. Power is improved 3%-6% on average in typical operating ranges. Results may vary.

Efficiency – Another benefit of E3’s faster flame propagation is less fuel is wasted, resulting in improved fuel efficiency. Lab and Dyno testing typically results in 3%-4% improved Brake Specific Fuel Consumption (BSFC). Results may vary.

Ecology – E3’s more complete burn drastically reduces carbon emissions and carbon build up.

Why Do You Need E3 Spark Plugs?

As the designated catalyst for the ignition of fuel in gasoline powered cars, trucks, motorcycles and small engines, spark plugs are a small, but constant factor in the workings of the vast majority of motorists on the road. What these motorists may not know is that their choice of spark plug could play a significant role in reducing the level of greenhouse gases that their vehicles give off, as well as increasing overall fuel economy and potential power output. This is where E3 Spark Plug's DiamondFire technology comes in.

Key Features

Nickel Plated Terminal End- Corrosion protection at the main contact point with your engine's ignition system.

Projected Insulator Tip- We have the deepest projections in the Industry, promoting better spark-zone refreshing between power strokes, without any negative side effects.

Spark Gaps Tailored to Your Engine- Unlike other 'premium' spark plugs that use a 'one size fits all' gap policy, E3 Spark Plugs have carefully optimized spark gaps chosen to maximize performance for each application.

E3 Spark Plug's patented ground electrode design provides for more efficient burning of your vehicle's air/fuel vapor, leading to more pressure in the cylinder. These improvements are measurable, and confirmed as compared to the designs found in existing spark plugs. The DiamondFIRE electrode projects the spark further into the combustion chamber, bringing it closer to the most robust air/fuel mixture. The initial combustion wave leaves the spark area at supersonic speeds, and the elevated edge provides a chimney effect so the next round of air/fuel mixture gets into the spark zone more easily.

The E3 ground electrode design forces edge-to-edge spark discharge, which is the best way to get a spark to leave a surface. Sharp edges are better at initiating electron migrations, and these accelerated electrons collide with matter inside the spark zone to release additional electrons. This design ensures that the whole population of electrons works to create a plasma channel through which the spark current flows more easily, resulting in an increase in both power output and fuel economy, while reducing emissions in gasoline engines and the build-up of carbon deposits on engine surfaces.

Our Products

Automotive Spark Plugs

E3 automotive spark plugs utilize the latest E3 technologies to help engines operate more efficiently by burning fuel more completely. Get more power, better fuel efficiency and a faster/smoother acceleration. E3 Automotive plugs come with a 5 Year/ 100,000 Mile Warranty.

Small Engine Spark Plugs

E3 small engine spark plugs have the same patented Edge-to-Edge DiamondFIRE ground electrode that has been proven to burn fuel more efficiently. Bring your L&G equipment to life, with quicker starts, more power, better fuel efficiency, and lower emissions. E3 Lawn and Garden plugs come with a limited Lifetime Guarantee.

Power Sport Spark Plugs

For near perfect combustion, put in a set of E3 power sports spark plugs that are Born to Burn! Featuring the patented DiamondFIRE ground electrode, E3 power sport plugs provide more power, quicker starts, better fuel efficiency and lower emissions. E3 Power Sport plugs offer a defect warranty for the 90 days.

Racing Spark Plugs

E3's unique DiamondFIRE ground electrode helps to create more turbulence in the cylinder, and facilitate a faster flame growth. The result is more complete combustion, which results in more power and better consistency. E3 Racing Plugs cover a wide variety of Motorsports applications.

Product Description

Product Description

The E3.38 power sports and watercraft spark plug is a 10mm, 0.750” reach plug with a gasket seat. It is used in a variety of powersport applications, especially import motorcycles. E3.38 is often in used in Honda, Suzuki, Yamaha, and other high RPM engines. The patented DiamondFIRE ground electrode is secured to the shell with two legs to help facilitate heat transfer, and to withstand the intense vibration of powersport engine applications. The unique DiamondFIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use. The E3 ground electrode and full-size center electrode also provides optimal performance over an extended product life. Part Number: E3.38; Resistor: Resistor; Hex Size: 5/8"; Thread Reach: 0.750"; Thread Diameter: 10mm; Seat: Gasket; Tip/Gap: DiamondFIRE Fixed Gap Cannot Be Adjusted. It replaces Champion G57C, G59C; and NGK CR7E, CR8E, CR9E. 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.

Amazon.com

E3 Power Sports spark plugs are a clear breakthrough in spark plug technology. Developed by researchers from leading engineering universities, E3's patented electrode design allows for a better spark, and resulting more complete flame kernal and flame front extending off the electrode, producing better overall localized pressure inside your boat, jetski, ATV or snowmobile's engine's cylinder(s). This in turn leads to the fuel/air mixture injected into the cylinder being more cleanly consumed, lessening the level of greenhouse gases emitted, increasing energy efficiency and generating more horsepower. .caption { font-family: Verdana, Helvetica neue, Arial, serif; font-size: 10px; font-weight: bold; font-style: italic; } ul.indent { list-style: inside disc; text-indent: -15px; } table.callout { font-family: verdana; font-size: 11px; line-height: 1. 3em; } td.vgoverview { height: 125px; background: #9DC4D8 url(https://images-na.ssl-images-amazon.com/images/G/01/electronics/detail-page/callout-bg.png) repeat-x; border-left: 1px solid #999999; border-right: 1px solid #999999; padding-left: 20px; padding-right: 20px; padding-bottom: 10px; width: 250px; font-family: verdana; font-size: 12px; }



Breakthrough technology for Power Sport engines.
View larger.
Effortless horsepower improvement.
View larger.
Drastically reduces carbon deposits.
View larger. Why You Need E3 Spark Plugs
As the designated catalyst for the ignition of fuel in gasoline power sport vehicle engines, spark plugs are a small, but constant factor in the workings of the vast majority of snowmobiles, ATVs, jetskis, boats and vehicles with similar performance needs. What owners of these vehicles may not realize is that their choice of spark plug could play a significant role in reducing the level of greenhouse gases that their engines give off, as well as increasing their overall fuel economy and potential power output. This is where E3 Spark Plug's DiamondFire technology comes in.

DiamondFire Technology
For the last 100 years, the only real advance in consumer spark plug technology has been to develop ways to make them cheaper. E3 Spark Plug's DiamondFire technology changes all of that through an improved electrode design that provides for more efficient burning of your engine's air/fuel vapor, leading to more pressure in the cylinder. These improvements are measurable, confirmed and based on the following design elements found in existing performance spark plugs.

First, the DiamondFire electrode directs the flame kernel to the piston more directly, reducing the travel time from the spark zone to the end gases via the open section at the top of the electrode. Given the short time available to get combustion started, the faster you can get the flame to the piston, the better. Second, the physical features of the electrode project further forward into the combustion chamber. This brings the spark zone closer to areas of probable "good" air/fuel mixture and also creates beneficial "micro-aerodynamics" within the spark zone. The initial combustion wave leaves the spark area at supersonic speeds above Mach 1, and the elevated edge provides a kind of chimney effect so the next round of air/fuel mixture gets into the spark zone more easily. Finally, the E3 electrode design features forced edge-to-edge spark discharge, which is the best way to get a spark to leave a surface. This improves upon the phenomena that drove race car drivers to "cut back" ordinary electrode spark plugs in order to improve the spark discharge. The spark itself occurs only when an avalanche of electrons migrates from the two electrodes (anode to cathode). Sharp edges are better at initiating electron migrations, and these accelerated electrons collide with matter inside the spark zone to release additional electrons. This design ensures that the whole population of electrons works to create a plasma channel through which the spark current flows more easily, resulting in an increase in both power output and fuel economy, while reducing emissions in gasoline engines and the build up of carbon deposits on engine surfaces.

Key Features:

  • DiamondFire electrode technology that creates a superior spark and resulting flame front extending further into the cylinder, producing more localized pressure.
  • Power increased > 6% to 12% (depending on engine class).
  • Fuel efficiency improved > 4% to 13% (depending on engine class).
  • Emissions reduced in 2 and 4-stroke engines (after 50 hours).
    • 58% CO emissions reduction.
    • 42% hydrocarbon reduction.
  • Quicker starts and near elimination of performance inhibiting carbon deposits.
  • Dramatically longer plug life.
  • Limited lifetime warranty.
What's in the Box
1-E3 Power Sports spark plug.

Limited Lifetime Warranty
E3 Power Sports spark plugs properly installed in noncommercial equipment are warranted to provide better performance than standard spark plugs, to properly discharge a spark, and to be free of defects in material or workmanship In the event of provable defect within the stated warranty period, the manufacturer will either replace the item(s), or refund the purchase price at their discretion.

About Pyrotek E3
Headquartered in Point Vedra, Florida, Pyrotek E3, d.b.a. E3 Spark Plugs, was formed to help customers increase power, improve fuel efficiency, and reduce engine emissions that contribute to global warming. Their advanced DiamondFire electrode design burns fuel more efficiently and completely, increasing mileage, horsepower and drastically cutting toxic emissions.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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E3 Spark Plugs E3.38 Premium Powersports Spark Plug w/DiamondFIRE Technology (Pack of 1)


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What's in the box

  • (1) Powersports Spark Plug
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    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    627 global ratings

    Customers say

    Customers like the performance, quality and value of the spark plug. They mention that it works great in their dirt bike, quads run great and that it's worth the money. They appreciate the throttle response, saying that it fires up quick. Customers are also happy with the smoothness.

    AI-generated from the text of customer reviews

    27 customers mention20 positive7 negative

    Customers like the performance of the spark plug. They mention that it works great in their dirt bike, Harley, and ATV. Some say that they have no negative results and that it makes their ATV run like new.

    "...The electrode on these plugs is crazy in size and the quads run great." Read more

    "...Immediate startup, no fuss, no 2nd or 3rd try...." Read more

    "I assume they work great. I used them in my motorcycle but the motor still needs work but the bike does crank up tho" Read more

    "They work great, I hope to see better mileage from these but time will tell." Read more

    24 customers mention20 positive4 negative

    Customers like the quality of the spark plug. They say it's the best motorcycle plugs ever, and the engine feels much stronger and more responsive. Some mention that the plugs are awesome, and there's no need to gap them, unlike a conventional plug.

    "...fouling out plugs but once I got these it they didn't foul out and stayed strong till I got my carb dialed in. Now this is my daily driver BTW...." Read more

    "Yeah it’s a nice spark plug" Read more

    "Little pricey but good plugs" Read more

    "...No need to gap an E3 plug, unlike a conventional plug. I will certainly try other E3 plugs for my other vehicles. I'm sold." Read more

    15 customers mention12 positive3 negative

    Customers like the value of the spark plug. They say it's worth the money, a great cheap replacement, and awesome product.

    "...Great plugs 200% recommend them well worth the money" Read more

    "...I bought this plug thinking that if it helped at all, it would be worth the money...." Read more

    "...Like them a lot. value for money spent is worth every penny I spend on them !!" Read more

    "Little pricey but good plugs" Read more

    10 customers mention10 positive0 negative

    Customers are satisfied with the throttle response of the spark plug. They mention that it is extremely snappy, and fires up quick. They also say that the performance change was noticeable, and the plugs are more responsive across the range. Some customers also mention that the plug has helped their ATV start easier.

    "...(not yet verified) because engine feels much stronger and more responsive across the range...." Read more

    "Would highly recommend, noticeable throttle response change" Read more

    "...to tell the difference as soon as I put the plugs in bit more responsive not much popping or misfire if it starts to misfire tighten or loosen the..." Read more

    "...Throttle response in extremely snappy. I've decided to go to the CR10EIX because these E3's run hot...." Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the mileage of the spark plug. Some mention that it increases mileage by about 5%, while others say that the gas mileage should be a bit better. However, some customers report that the fuel mileage appears to be the same. Overall, customers are happy with the performance and durability of the product.

    "...gas mileage SHOULD be a bit better (not yet verified) because engine feels much stronger and more..." Read more

    "...Just had to try one. No negative results. Fuel mileage appears to be the same. Will update after 6000 miles." Read more

    "...can't really determine any difference in performance, but the engine is a lot better after the complete maintenance job...." Read more

    "...But wow! Increase of mileage of about 5%. Never seen any plug do that." Read more

    5 customers mention5 positive0 negative

    Customers like the smoothness of the spark plug. They mention it makes their scooter run super smooth and is better than the iridium ones.

    "...They fit my engine like OEM plugs and seemed to run a little smoother but could be just wishful thinking...." Read more

    "...up a little those are much hotter than the iridium ones, but feels really good!" Read more

    "...It makes the scooter runs super smooth!..." Read more

    "INSTALLED E3 SPARKPLUGS IN MY 2004 HONDA WAVERUNNER WITH TURBO VERY SMOOTH AND PEPPY...." Read more

    WORKS for a few miles.
    1 Star
    WORKS for a few miles.
    My 2019-Burgman 400 moves a lot better with a clean plug and clean air filter. This plug crapped out at 1,500 miles.Buy the OEM, this plug a POS.
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