The NGK BPR5EIX Iridium IX ATV spark plug for Kawasaki KAF400 MULE SX XC LE 4X4 USA 2019 ensures long-lasting performance and maximum ignition efficiency. Its ultra-thin iridium center electrode delivers powerful combustion and improved fuel economy. Designed for modern high-performance ATVs, it offers fast throttle response and excellent durability.