E3 DIAMONDFIRE AUTOMOTIVE SPARK PLUGS

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$5.95
SKU #: JCW-526360 Manufacturer #: E3.48 Brand: E3
Customer Rating: 3.7 of 5 stars
AUTOMOTIVE SPARK PLUG
  • Produces up to 12% more power, reducing fuel consumption up to 13% while cutting harmful toxic emissions up to 58%
  • By reducing carbon deposits, your engine will run cleaner and smoother and last longer
  • Patented Edge-to-Edge design concentrates spark energy for easier starts in all weather conditions
Increases both 2- and 4-cycle engine power 8% to 12% over conventional spark plugs.

Overall Rating
3.7 out of 5
3.7 out of 5
Open Ratings Snapshot
Rating breakdown 61 reviews
5 Stars
30
4 Stars
11
3 Stars
4
2 Stars
2
1 Star
14
Ease of Use/Installation
4 out of 5
4 out of 5
Quality/Construction
5 out of 5
5 out of 5
44 of 61(72%)reviewers would recommend this product to a friend.
Product ReviewsWrite a review
Overall Rating
5 out of 5
5 out of 5
Good Plugs
November 29, 2011
Matt
Location: Seagrove, NC
How often do you shop at JC Whitney.com? First Time
"Put these plugs in my 2000 silverado 2500 and what can I say they work great!!!! I can tell a great diffrence in the running and power of my truck. Your next set of plugs you need to go with these!!!"
+8points
14out of 20found this review helpful.
Was this helpful?helpful14unhelpful6
Overall Rating
5 out of 5
5 out of 5
about the same
September 3, 2014
longrange
Location: Baton Rouge, LA, USA
How often do you shop at JC Whitney.com? Once a Year
Ease of Use/Installation
3 out of 5
3 out of 5
Quality/Construction
5 out of 5
5 out of 5
"Works the same as a nonpreset spark plug. No noticeable improvements also."
0points
0out of 0found this review helpful.
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Overall Rating
1 out of 5
1 out of 5
Not impressed
September 1, 2014
Rob Zman
Location: Swedesboro, NJ
How often do you shop at JC Whitney.com? Once a Year
"I guess it depends on which vehicle you use these in, but my experience has been disappointing to say the least. I own a 2009 BMW X5 3.0 xdrive with 60k miles and installed these plugs August 2, 2014. the car calls for a Bosch or NGK double platinum. Against my better judgement I went with the E3s. My mileage went down to 17.7 mpg from 20 and there was hesitation when accelerating. I have pictures showing my 60,000 mile Bosch compared to the 2,500 mile E3. The E3 had an extreme amount of carbon deposits while the OEM Bosch plugs had normal wear."
0points
0out of 0found this review helpful.
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Overall Rating
5 out of 5
5 out of 5
E3 plugs fro PT
May 28, 2014
Mr. Speed
Location: Arkansas
How often do you shop at JC Whitney.com? Once a Year
"These plugs increased my fuel mileage approx.4 mpg and I have not gotten any better performance or gas increase from the other so called copper plugs! And they have never failed me.
I recommend them!
"
0points
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1-4 of 61
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