What does Champion spark plug 318 rc12mc4 fit?

The Champion spark plug 318 RC12MC4 is designed to fit various small engines, particularly in outdoor power equipment such as lawn mowers, chainsaws, and some motorcycles. It is commonly used in engines from manufacturers like Honda, Suzuki, and others that require a compatible plug with specific heat range and threading. Always consult the engine's manual or specifications to ensure proper compatibility.