The Autolite 4164 resistor spark plug combines advanced suppression technology with dependable ignition performance for small engines and powersports equipment. Built with integrated resistor technology, this plug minimizes electromagnetic interference while maintaining optimal spark consistency. The robust electrode design handles extreme combustion temperatures and delivers reliable cold-start capability in all weather conditions. Engineered to OEM specifications, the 4164 ensures compatibility across multiple applications and equipment types. Choose Autolite for precision-engineered ignition solutions that maximize engine efficiency and longevity.