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Overview Reviews Similar Products --> Product Description NGK long thread ES spark plugs longer thread for use in sachs, derbi and tomos A55, and more! numbers correspond to the temperature of the spark. 5 is the hottest and 10 is the coolest. stock mopeds will generally run a 5 or 6, 60cc-70cc mopeds maybe a 7 or 8, high compression engine may want a 9 or 10. OEM quality, triple-gasket sealing process, consistent performance, plug of choice in millions of mopeds! Product Videos Custom Field Product Reviews Write a Review Write a Review NGK NGK B7ES Long Reach Spark Plug Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments * 1 Review Hide Reviews Show Reviews 5 NGK non resister spark plugs Posted by Bob from Minnesota on 15th Dec 2024 I purchased several sets to have on hand. Can't find the non resister spark plugs in this style by NGK in parts store. Happy to purchase them, plus excellent price.