JRL Blowers Ignition Coil Magneto For STIHL SR/BR 340 380 420 Rep #4203 400 1301 Fits: STIHL SR340 SR380 SR400 SR420 BR340 BR420 Mist Backpack Leaf Blower Replace OEM: #4203 400 1301 Package Include:1* Ignition Coil High quality replacement parts. We provide clear pictures, measurements where possible. Please compare its appearance, shape and size with your original unit and make sure that it can fit your machine before ordering.