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E3 DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
5 yr replacement if defective
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Product Information
Product Details
Part No. E3.68
Warranty Details (5 YR REPLACEMENT IF DEFECTIVE)
The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The 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. E3.68 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. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.
Product Features:
Product Features:
- E3's Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
- Smoother Acceleration & Idle - The faster flame initiated by the 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 up to 6% on average in the typical operating ranges. Results will vary.
- Efficiency - The "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 larger flame kernel. The result is that more fuel is put to work durin
- E3's patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
- The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
- Wide Compatibility: E3.68 spark plugs are 14mm with a 1.000 reach and a gasket seat, fitting a wide variety of late model applications, especially Hemi engines.
- Enhanced Heat Transfer: The three legs securing the Diamond FIRE electrode to the shell ensure excellent heat transfer and create more turbulence in the cylinder for better combustion.
- Widely Available: E3.68 spark plugs are widely stocked in automotive retail stores, making them easily accessible for consumers.
Specifications
Center Electrode Core Material:
Copper
Center Electrode Tip Material:
Nickel
Electrode Core Material:
Copper
Electrode Tip Material:
Nickle
Gap:
Pre-gapped at the factory to meet O.E. requirements; Gap cannot be adjusted
Ground Electrode Tip Material:
Nickel
Hex Size:
5/8 in
Insulator Height:
50.49 mm
Insulator Type:
Ceramic
Pre-Gap Size:
1.016 mm
Reach:
25.4 mm
Resistor:
Resistor
Seat Style:
Gasket
Seat Type:
Gasket
Shorty Spark Plug:
No
Thread Diameter:
14 mm
Tip Configuration:
Nickle
Wrench Diameter:
0.625 in
4.11 out of 5
718 Customer Reviews
60% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
467
4 Stars
99
3 Stars
23
2 Stars
19
1 Star
110
Pros
147
Easy To Install
131
Improves Engine Efficiency
127
Increases Power
70
Durable
34
Lightweight
Cons
446
No
60
No Improvement In Performance
38
Decreases Gas Mileage
35
(null)
18
Yes
Most Liked Positive Review
They work!
Despite the mixed reviews, I had to try these for myself just to see first hand. It's only a $20 investment for a 4 cylinder so what the heck? I knew from the really bad negative reviews I had seen that the spark plugs weren't the cause of the wear on the plugs themselves. The spark plug isn't at fault when an engine is running too lean or too rich. If you have been keeping a good eye on your AFR (air fuel ratio) and you know that your vehicle is running within the limits of what it was designed I'd suggest you give these plugs a shot. I put them on my 1992 Nissan Hardbody and I was very surprised at the instant increase in horsepower. It's not a placebo either. I had just put the previous plugs in less than 2 weeks ago and upon inspection they looked like new. Put the E3 plugs in and took it for a drive - It's unreal how much of a difference these things made in torque/power to the wheels. I've drove 150 miles since installing them and I've used 4.7 gallons of gas, so you can figure 32 mpg avg based on my driving. With the NGK OEM plugs I was getting aprox 28.5 mpg. I'd say that these plugs definitely do their job, not sure whats going on with all the negative reviews, but I can say that I'm not paid to leave this review I'm just stating it from my own experience, If I had been disappointed believe me, I'd made it clear in this review. People who have newer vehicles that implement more computerized controls over their engine probably will have a lesser improvement with these plugs - or quiet possibly negative effects. The ECM is designed to run under certain conditions and some of those a different spark plug can't cause miracles. OBD-1 systems will most likely see more benefit than OBD2 and CARB vehicles may benefit the most. Are they worth $5 a piece, well I paid it, so I won't complain - but if they were a little cheaper I'd probably gave these plugs a 5 star review too!
Most Liked Negative Review
GARBAGE! DO NOT BUY!
Bought these in September and by March with less than 3000 miles on them 2 were misfiring and 1 of those 2 was completely melted through. I mean torched not even just burned out, torched. I am lucky these plugs didn't cause any major damage to my engine, that I know of yet (knock on wood). Long story short I will never buy these again and will tell everyone I can not to buy this product or any E3 product. Thankfully Advance returned them as defective.
Reviewed by 718 Customers
Honda Insight - may not work
These plugs didn’t look well manufactured in general. More importantly they DID NOT WORK on my Honda Insight. Apparently the lean combustion cycle requires fairly accurate placement and circulation around the spark, so stick with the OEM and check your old plugs for the letter on top of each. You can find an explanation on [@].
Bottom Line No, I would not recommend to a friend
Things to consider.......
Great performance, and great fuel economy boost with these plugs. You also have greater resistance to cylinder carbon build up with these plugs. The down side: These plugs won’t last more than 15k miles when used for towing/hauling duties.
Bottom Line No, I would not recommend to a friend
TV to much glamor,not enough proof !
did not last 9000 miles.one E-3 spark plug went sour,fowled up computer!wow did it...DEALER expence,many$$$$,not covered under waranty,more$$$$ to fix. Would not recomend to any person!!
Bottom Line No, I would not recommend to a friend
good plug w/ limits!
installed theses plugs in two vehicles, a '04 subaru baja automatic, and a '97 chevy cavalier w/ manuaul trans. in the subaru noticable profomance when new, did not improve gas mileage but improved acceration and deeper exhaust note, however at 30,000 miles the still a strong plug as in it isnt fouling but the proformance has slipped. in the '97 cavalier, a little bit more power but it got the car to 38-40mpg! this plug is great in a vehile with a small engine and a stick! not to good in an automatic and too expensive for the v-8 or bigger engines, for those stick with a ngk double platium
Bottom Line Yes, I would recommend to a friend
You've got to be kidding!
These are just the latest in a LONG line of Voodoo Technology spark plugs, designed to cleaverly relieve you of your money and dignity. PLEASE do yourself a favor and DONT WATE YOUR TIME! Buy a good quality spark plug with a platinum electrode and call it a day. There is not a single one of these fancy plugs that actually works better than a normal design platinum plug. Spark will always travel to the path of least resistance. Extra or extra-large electrodes will not change this. And chrome plating peels and rusts. And non-adjustable plugs never last as long as one you can re-gap. The wider the gap, the more fuel gets burned.
Bottom Line No, I would not recommend to a friend
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