Spark plug heat value is an indicator of heat and heat dissipation ability. Whether the spark plug heat value is high or low depends mainly on the actual situation of the vehicle. Generally, each motorcycle has a suitable spark plugs, motorcycle owners should refer to the original spark plugs to find the spark plugs suitable for the engine.

Spark plugs have 9 levels of thermal value, of which 1-3 are low thermal value , 4-6 are medium , and 7-9 are high thermal value. The higher the heat value of the spark plug, the faster the spark plug dissipates heat, the lower the temperature of the spark plug when it works, and the easier it is to produce carbon deposits.