Product Part Number: 42441900308 Compatible Models: BR450, SR430, SR450, SR450Z Key Benefits and Features: Precisionengineered to fit with specified Stihl backpack blower and sprayer models, ensuring reliable compatibility and performance. Sturdy construction designed to deliver smooth and consistent recoil starting, reducing effort and improving efficiency in daily use. Durable materials provide longlasting performance even under frequent operation, minimizing downtime and maintenance needs. Simple, quick installation process allows for fast replacement without specialized tools, helping you get back to work quickly. Function and Performance: This part ensures that your equipment starts smoothly every time, reducing strain on the operator and preventing delays in tasks that require dependable operation. The robust build withstands repeated use in demanding environments such as landscaping, agricultural spraying, or property maintenance. Practical Applications: 1. Ideal for professional landscaping crews using the BR450 blower to clear leaves and debris quickly and efficiently. 2. for agricultural operators employing the SR430 or SR450 sprayers for distributing fertilizers, herbicides, or pesticides over large areas. 3. Suitable for property maintenance teams who need reliable starting performance when using backpack sprayers or blowers on a daily basis. Size and Material: Manufactured to exact OEM standards for size and fit, ensuring seamless replacement and compatibility. Built from quality materials optimized for strength, wearresistance, and consistent operation in varying conditions. With this part installed, your BR450, SR430, SR450, or SR450Z operates with dependable startup performance, allowing you to maintain productivity and focus on the task at hand.