NGK spark plugs are the BEST spark plugs for any application that requires a spark plug. And NGK makes a connector that will fit just about any engine you might have. If necessary, use the spark plug cross reference chart (easily found online) to find the correct NGK replacement plug for each OEM spark plug that came with your engine (e.g. Champion OEM spark plugs). I only used NGK spark plugs. For 10 years in all my low power appliances (lawn mower, washing machine, outboard motors, etc.). and