Stihl FS50 FS51 Ignition Coil Get link Facebook X Pinterest Email Other Apps Stihl Parts | Stihl Parts Lookup Part description: Stihl 4118 400 1300 ignition coil Also referred to as 4118 400 1300 ignition module Other part numbers: 41184001300 Replacement ignition coil for Stihl FS50 and FS51 trimmer models.Stihl FS50 Parts