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Pros & Cons
Cons
There are only two brand/model numbers that work for this car. These are not the ones to use in your garage. They will not work for your car. They caused your car to misfire.
Highlights
Quality
I have always veen pleased with these plugs.
Competitiveness
Bought theses after using the same thing from a diffrent brand that napa carried.
I installed on a polaris rzr 800.
Overview
- How are reviewers describing this item?
great, fit, wrong and good. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has analyzed and discovered that 75.1% of the reviews are reliable.
- This product had a total of 210 reviews as of our last analysis date on Aug 20 2023.
Helpful InsightsBETA
Posted by a reviewer on Amazon
No i didnt actually get 300hp gains barely got any noticeable gains at all but they do fit my 08 civic si though
Posted by a reviewer on Amazon
No particular reason other than i wanted the iridium core
Posted by a reviewer on Amazon
The spark plugs i removed were ngk
Posted by a reviewer on Amazon
Not surprising as it was a japanese vehicle
Posted by a reviewer on Amazon
Use antiseize on the threads and spark plug grease on the tip
Posted by a reviewer on Amazon
Oh i also change the spark plug wires when i change plugs
Posted by a reviewer on Amazon
In my experience you can damage a wire just pulling it or find one abraded from rubbing on a motor part
Posted by a reviewer on Amazon
Know your engines powerheat requirements7 doesnt mean more power it means less area of spark generation is exposed to combustion gases thus its referred to as colderright now i am actually using ngk heatrange 6 because i dont need 7s at this exact moment
Review Count History
Price History
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