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5/8-in 2-cycle engine and 4-cycle engine Spark plug Fits Champion, Briggs Stratton, NGK, Torch

Ratings & Reviews for E3 Spark Plugs 5/8-in 2-cycle engine and 4-cycle engine Spark plug Fits Champion, Briggs Stratton, NGK, Torch

4.6
434
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Review
  4.6 out of 5
434 Reviews


91% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these spark plugs for dramatically improving engine starting and performance across lawn equipment and small engines. Most report engines start on the first pull, even after struggling with previous plugs, with many noting immediate improvements in cold starts and throttle response. Reviewers consistently report enhanced engine power and reduced fuel consumption, with many becoming loyal repeat buyers who use them exclusively in mowers, snowblowers, chainsaws, and generators. A few express minor skepticism about performance claims or mention isolated fit issues, but overall customers consider them a reliable, worthwhile upgrade.

Customer review summary generated by AI, including incentivized reviews.
434 Customer Reviews

Waiting to install

 Would Recommend

Haven’t installed this yet

November 3, 2025
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 Would Recommend

E3s work very well. Get multi year service from them instead of having to change them every year.

October 28, 2025
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They work

 Would Recommend

They worked as intended

October 17, 2025
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High cost hard to locate old number on the brand

 Would Not Recommend

Price not stand champion plug.

October 13, 2025
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Sparkplug for generator

 Would Recommend

Hard to determine exact replacement

October 10, 2025
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Requires small (maybe metric) spark plug wrench

 Would Recommend

Works great.

September 26, 2025
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I have seen other reviews on these plugs and chart

 Would Recommend

E3. Spark plugs to me are the best they make small engines run better they make all engines better.

September 14, 2025
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Excellent

 Would Recommend

[This review was collected as part of a promotion.] There was a noticeable increase in power when I put this in my Honda walk-behind mower

September 9, 2025

From e3sparkplugs.com

good buy.

 Would Recommend

i did not need to use.

August 31, 2025
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Spark plugs

 Would Recommend

Run E3 plugs in all my small engine yard equipment. Seems to start and run better than other plugs.

August 15, 2025

From e3sparkplugs.com