The STIHL 42426407507 Gear Wheel is a genuine OEM replacement component engineered for precise fit and optimal performance in STIHL BR 500, BR 550, BR 600, BR 700, and BR 800 series backpack blowers. This essential gear ensures reliable power transmission and smooth operation within the machine's engine system, contributing to the longevity and efficiency of your equipment. Manufactured to STIHL's rigorous quality standards, it guarantees durability and compatibility.