NGK Spark Plug 4626 BPMR7A Stihl Lawn Mower Chainsaw Four-Stroke Engine Ignition

When lawn mowers or chainsaws have starting difficulties, idling instability, weak acceleration, or noticeably increased fuel consumption, the spark plug electrodes are worn or heavily carboned and need replacement. In four-stroke engines, the plug generates the spark to ignite the mixture. Compatible with Stihl and other brands of garden gear (post-2000 four-stroke models). OEM 4626/BPMR7A. Use an M14x1.25 socket and torque 20-25 N·m to avoid thread damage or leaks.