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

What Customers Are Saying

Customers overwhelmingly praise this spark plug's performance, with most reporting dramatic improvements in engine starting and operation. Many describe their mowers and generators firing up on the first pull after previously requiring multiple attempts. Reviewers consistently highlight smoother operation, increased power, and reliable long-term performance across multiple pieces of equipment. Several customers report using these plugs annually for years and plan to continue. A few note fit issues with specific engine models or gap adjustment needs, though these are rare exceptions. Overall, most customers consider this a worthwhile investment that delivers dependable results.