What is the difference between a champion cj8 and cj8y spark plug?

The main difference between Champion CJ8 and CJ8Y spark plugs lies in their design and intended application. The CJ8 is a standard spark plug suitable for a variety of engines, while the CJ8Y features a longer reach and a different heat range, making it more suitable for specific engine requirements, particularly in some two-stroke applications. Additionally, the CJ8Y may have variations in electrode design or material, which can affect performance and longevity. Always consult your engine's specifications to choose the correct plug.