This set of three anti-vibration (AV) springs is a genuine Stihl replacement for select backpack blowers, including the SR 320 and SR 400. Each spring is a durable metal assembly designed to isolate engine vibration from the frame and harness, enhancing operator comfort during extended use. As a direct-fit Stihl spare with OEM part number 4203 760 9050, this AV spring set restores proper suspension performance when original mounts have worn, perished, or failed. By reducing vibration, it also helps protect nearby components from stress and wear.
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