Model : BP5ES ; Package Include: 4pcs x Spark Plug. Thread Size: 18 x 13.8mm / 0.72 x 0.55inch (L*D); Thread Pitch: 1.25mm / 0.05inch; Total Size: 79 x 23mm / 3.11 x 0.91inch (L*D). High-temperature resistance, long service, and good reliability. Center electrode made from nickel for greater durability and lower voltage requirements. Replacement for Generator Tractor Go Kart Minibike. Description: * High-temperature resistance, long service, and good reliability. * Replacement for Generator Tractor Go Kart Minibike. * Center electrode made from nickel for greater durability and lower voltage requirements Features: * Model : BP5ES * Thread Pitch: 1.25mm / 0.05inch * Thread Size: 18 x 13.8mm / 0.72 x 0.55inch (L*D) * Total Size: 79 x 23mm / 3.11 x 0.91inch (L*D) Package Include: * 4pcs x Spark Plug