E3 DIAMONDFIRE AUTOMOTIVE SPARK PLUGS

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SKU #: JCW-526356 Manufacturer #: E3.40 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 59 reviews
5 Stars
29
4 Stars
11
3 Stars
4
2 Stars
2
1 Star
13
Ease of Use/Installation
5 out of 5
5 out of 5
Quality/Construction
5 out of 5
5 out of 5
43 of 59(73%)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
13out of 18found this review helpful.
Was this helpful?helpful13unhelpful5
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
0out of 0found this review helpful.
Was this helpful?helpful0unhelpful0
Overall Rating
4 out of 5
4 out of 5
Quality plugs
November 3, 2013
Maintainer
Location: Rockford, IL, USA
How often do you shop at JC Whitney.com? Multiple Times a Year
Ease of Use/Installation
5 out of 5
5 out of 5
Quality/Construction
5 out of 5
5 out of 5
"I have purchased my second set for my 1998 Dodge Ram 1500.
My first set have lasted over 6 years!
I had 1 plug foul when I first bought them but I called JC Whitney and they replaced it in one day by mail.
These plugs increased my fuel mileage approx. 2-3 mpg and have not failed me.
I recommend them!
"
+2points
2out of 2found this review helpful.
Was this helpful?helpful2unhelpful0
Overall Rating
5 out of 5
5 out of 5
I'm a fan
May 29, 2013
Doug
"I am a fan of e3, while there some haters out there I haven't had any problems. Note, when replacing plugs I replace the wires and coils with high end aftermarket ones, so, maybe that is why I have no problems."
Pros: More power and milage
Cons: none
+2points
3out of 4found this review helpful.
Was this helpful?helpful3unhelpful1
1-4 of 59
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