Brand | E3 |
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Core Material | Copper |
Gap Size | 0.04 m/m Kelvin |
Thread Size | 14 millimeters |
Top Material Type | Alloy Steel |
Vehicle Service Type | Motorcycle |
Manufacturer | E3 Spark Plugs |
Model | E3.74 |
Item Weight | 0.32 ounces |
Product Dimensions | 3.5 x 0.75 x 0.75 inches |
Country of Origin | China |
Item model number | E3.74 |
Exterior | Chrome |
Manufacturer Part Number | E3.74 |
OEM Part Number | E3.74 |
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E3 Spark Plugs E3.74 Premium Automotive Spark Plug w/DiamondFIRE Technology (Pack of 1)
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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Purchase options and add-ons
Brand | E3 |
Core Material | Copper |
Gap Size | 0.04 m/m Kelvin |
Thread Size | 14 millimeters |
Top Material Type | Alloy Steel |
About this item
- 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) E3.74 spark plug with a limited lifetime warranty
- Primarily used in a wide variety of automotive and truck applications
Additional Details
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Check the product details and customer reviews to learn more about this item.
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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
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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
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Automotive Spark PlugsE3 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 PlugsE3 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 PlugsFor 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 PlugsE3'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
The E3.74 auto spark plug is a 14mm, 1.000” reach plug with a taper seat. It fits a wide variety of late model applications, especially Ford applications. 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: E3.74; Resistor: Resistor; Hex Size: 5/8"; Thread Reach: 1.000"; Thread Diameter: 14mm; Seat: Taper; 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.
Product information
Technical Details
Additional Information
ASIN | B01BJ5TFVE |
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Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | #81,754 in Automotive (See Top 100 in Automotive) #568 in Automotive Replacement Spark Plugs |
Date First Available | February 7, 2016 |
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This Item E3 Spark Plugs E3.74 Premium Automotive Spark Plug w/DiamondFIRE Technology (Pack of 1) | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $7.16$7.16 | $5.09$5.09 | $27.36$27.36 | $6.99$6.99 | -5% $36.03$36.03 Typical: $37.85 | -56% $7.00$7.00 List: $15.80 |
Delivery | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it Apr 2 - 4 | Get it as soon as Tuesday, Apr 2 | Get it Apr 3 - 5 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Value for money | 3.4 | 4.0 | — | 4.2 | 4.5 | 3.9 |
Mileage | 3.4 | 4.0 | — | 4.2 | 4.4 | 3.8 |
Longevity | 3.2 | 4.0 | — | 4.1 | — | 3.8 |
Sold By | Amazon.com | Amazon.com | Sixity Auto | Amazon.com | ZillaZon ✅🏆⭐Authorized | Amazon.com |
compatible vehicles | Motorcycle | — | — | Motorcycle | — | Motorcycle |
number of items | 1 | 1 | — | 1 | — | 1 |
gap size | 0.04 meters per meters kelvin | 0.03 meters per meters kelvin | — | 0.04 inches | — | — |
core material | Copper | Copper | Copper | Copper | Copper | Iridium |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, and acceleration of the spark plugs. For example, they mention that it improves engine performance, throttle response, and gas mileage. That said, they appreciate the faster starts and the ability to save gas. That being said, opinions are mixed on the quality and value of the product.
AI-generated from the text of customer reviews
Customers like the performance of the spark plug. They say it provides better engine performance, smoother idle, and better mpg. They also say the car drives a lot better, seems to have more power, and the throttle response is a little better. Customers also mention that on a dyno, they can feel a consistent steady improvement in acceleration. Overall, most are happy with the performance and recommend the product to others.
"...to install that increases fuel mileage, gives it more pep, makes it run smoother and accelerate faster all while saving gas and reducing the amount..." Read more
"...Have had in about several weeks now and the car drives alot better, seems to have more power and helped with transmission problems where my car had..." Read more
"...done two of these BRAND NEW PLUGS was bad both cylinders 3 and 5 was misfires put old plugs back in and codes was gone...." Read more
"...fuel efficiency is up a bit and throttle response feels better.. With that said, I would recommend these" Read more
Customers like the fuel efficiency of the spark plug. They say it improves gas mileage and power, and throttle response feels better. Some customers also say that it delivers more power, smooth acceleration, and great fuel economy. Overall, most are satisfied with the performance and durability of the product.
"...of any off hand that are this cheap and easy to install that increases fuel mileage, gives it more pep, makes it run smoother and accelerate faster..." Read more
"...in about several weeks now and the car drives alot better, seems to have more power and helped with transmission problems where my car had problems..." Read more
"...CONS:1. You get what you pay for2. Poor MPG (actually average out to car's spec, rather than improve)" Read more
"...fuel efficiency is up a bit and throttle response feels better.. With that said, I would recommend these" Read more
Customers are satisfied with the acceleration of the spark plugs. They mention that they provide better fuel economy, faster starts, and better gas mileage. Some say that the plugs make startups really quick and the engine sounds better. Overall, most are happy with their purchase and recommend them to others.
"...fuel mileage, gives it more pep, makes it run smoother and accelerate faster all while saving gas and reducing the amount of pollution your pouring..." Read more
"...I also notice a quicker ignition and less hesitation when I get on the gas! Definitely recommend and would definitely buy again." Read more
"Great value saves gas and start up fast" Read more
"...The plugs definitely needed replaced, these plugs fired immediately with no issue and my car seems to be running much smoother then before...." Read more
Customers find the installation process of the spark plug to be easy. They mention that it increases fuel mileage and makes their car run better.
"...I can't think of any off hand that are this cheap and easy to install that increases fuel mileage, gives it more pep, makes it run smoother and..." Read more
"Great plugs they fire very hot made my car run better easy to start my car" Read more
"No problems with install. Felt a difference in acceleration right away yet I haven't noticed much change in fuel consumption...with the plugs alone...." Read more
Customers are mixed about the quality of the spark plugs. Some mention that they are good spark plug that run smoothly, while others say that they melted and damaged their engine. Some customers also say that the plugs were loose at the white part and had metal sticking out of the end where it should not.
"The spark plugs are great. I added the sparkplug to my 2013 for f150 xlt super cab with the thyclinic are fantom my air intake...." Read more
"...the plug wires with performance wires too but, well the V6 doesn't use spark plug wires, oh well on to the next upgrade or MOD on the list, if you..." Read more
"...The Ford Coyote 5L engine is the simplest engine to replace plugs on EVER! 2) These plugs so far perform beautifully...." Read more
"Great plugs they fire very hot made my car run better easy to start my car" Read more
Customers are mixed about the value of the spark plug. Some mention it's worth the cost, easy to install, and saves gas. However, others say that it'll not be worth the added cost for the performance gains.
"...I can't think of any off hand that are this cheap and easy to install that increases fuel mileage, gives it more pep, makes it run smoother and..." Read more
"...It wasn't any different than OEM. Not worth it IMHO." Read more
"PROS:1. Affordable2. Fixed gap as advertised3. Great response4. Would recommend to anyoneCONS:1...." Read more
"...Not really worth the added cost for the performance gains, either." Read more
Customers have mixed opinions about the fit of the spark plug. Some mention that it's the right fit, while others say that it doesn't fit their truck.
"...Love these spark plugs and fit great no need to gap them and performance wise agree to disagree but i feel a difference." Read more
"They are wrong size for my truck and the information on the website needs to be changed so someone else don't make the same mistake" Read more
"They fit my vehicle perfectly and performs excellently" Read more
"Doesn't fit my 2009 Chevy Silverado" Read more
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So I looked at several so called high performance plugs and thought about a couple brands like the plasma producing plugs that were $12.00 + per plug or more, but the reviews were mixed and unreliable, so I kept searching, I decided on the E3.74 plugs for my prized Camaro, she's a 2014 model and has 20,000 miles on her, before I made any modifications to her she got an average mileage of 18.9 mpg around town and 27.4 mpg or better on the highway when she was completely stock, I recently started upgrading her for performance and looks because she's already pretty but I wanted to make her even better looking and better running.
The first think I installed was a K&N Typhoon Performance Air Intake system, I also installed heat shielding in the AirBox to make it into a cold air intake and also added an air scoop, I immediately noticed horsepower and fuel mileage gains, after the air intake I was getting 19.8 city and 28 highway, now after installing the E3.74 plugs mileage is up to 22.4 in town and 31 on the highway, I expect it'll go up a little more over the next couple weeks when they settle in, so far just an air intake and spark plugs made a big difference in power and gas mileage so I can't wait to see how she'll be when I add headers and performance exhaust and a light tune and throttle management system, I am very happy with these plugs and so far the preliminary numbers are promising and I have high hopes for these plugs, and it's nice to know they have a 5 year 100,000 mile warranty which is great for spark plugs? I haven't really heard too many bad things about these plugs except maybe some vehicles were getting an error on their vehicle from pre igniting the fuel which is bad, but it does show that they work really good if they are igniting the fuel faster then the stock plugs, the problem is that the E3 plugs ignite the fuel so fast that the ECM thinks the plugs are malfunctioning
So far I am really impressed with these plugs, I had heard of these and similar plugs before that had the larger conductors and electrode and it makes sense that they would provide increased spark because of more surface area, and more spark equates to better air fuel ignition and burn for cleaner emissions and better fuel economy so just the way they are built would hint they are superior plugs compared to standard plugs but the proof is in the numbers, besides the improved fuel mileage I can definitely feel a difference in the throttle response, she just feels peppier, stronger, and the engine purrs with these plugs, I haven't ran it for 1/4 mile and 0/60 times yet, but I can feel the difference when I press the gas pedal and she accelerates faster and smoother and she really seems to like these new plugs, I'll keep a good log of mileage and performance and the difference these and other upgrades make on my Camaro....
One thing I need to mention is my Camaro has the 3.6 liter V6 engine and a lot of people talk crap abut the smaller engine in a Camaro, because V6 doesn't scream muscle car like the big V8's do, but those people are snobs and don't realize that a 6 cylinder car that has 217 HP stock for the 2012 LS series is a lot of ponies for a V6, HOWEVER the 2014 LS2 V6 (my Camaro) has 323 HP ponies in the base package, and then if you add on a couple modifications you'll be able to get an easy 400 HP out of it, if you go even further and invest in a supercharger you'll bolt on another 150HP on top of that, and 500 to 550 horsepower is respectable for any V8 engine so to be able to get 500 and 550 horsepower and more on a 3.6 liter 6 cylinder engine is a massive amount of horsepower, so starting with E3 plugs and a good air intake system are only the beginning and will get your V6 or any other engine well on its way to blowing the doors of any one who challenges your secret weapon...
I was going to upgrade the plug wires with performance wires too but, well the V6 doesn't use spark plug wires, oh well on to the next upgrade or MOD on the list, if you want to really give your cars engine a really good upgrade that's not too expensive then these plugs are a great start because for around $40.00 to $50.00 you can give your engine a heck of an upgrade, I mean think of it, what other upgrade can you give your cars engine for $50.00 or less that will do as much for it as these plugs will do? I can't think of any off hand that are this cheap and easy to install that increases fuel mileage, gives it more pep, makes it run smoother and accelerate faster all while saving gas and reducing the amount of pollution your pouring out of your exhaust pipes?
If your on the fence about these then do some research and see for yourself, there are lots of videos and research and information on these plugs out there. One last thing of note, plugs like NGK and other so called performance plugs use platinum or iridium as a medium for conductivity and are a big selling point, but the truth is that those metals are less conductive then say copper (E3 uses copper) or the best conductors of electricity are gold and silver but I don't know of any plugs that use silver or gold so iridium and platinum are the metals with the lowest level of conductivity where copper and silver being the best, the reason these manufacturers use iridium and platinum are because they are more durable, they will last longer but you loose performance with plugs using platinum and iridium, so with E3 using copper you know they will conduct electricity to produce a more efficient and stronger spark pulse, try them and you'll love them, I plan on replacing all my vehicles plugs with these plugs on payday because they all deserve to have only the best parts and for the price. I am happy to pay t for these plugs
BC
Must say though when i first put them in, i put them in while the car was still hot and i put a little too tight and when i fired up the car the first time after 1st install, the car vibratedand sputtered like crazy and was hard to drive. So i shut the car off, backed the plugs out a little and then retightened with less force. Car fired up fine after and has been running fine since. So if you have that problem in this car or any other car just try what i did. I also used electrolysis as well.
Top reviews from other countries
No les recomiendo que las adquieran, son muy caras, las bujías de Iridio denso dan mejor potencia y rendimiento, y son más baratas y confiables.
Reviewed in Mexico on June 5, 2021
No les recomiendo que las adquieran, son muy caras, las bujías de Iridio denso dan mejor potencia y rendimiento, y son más baratas y confiables.