Original Tillotson Racing Screw with manufacturer code 138220023, specifically designed for the Tillotson 225RS 4-stroke engine of the Tillotson T4 Series single-brand category.
This component is the technical screw dedicated to the mounting and fastening of the ignition group (coil) directly onto the support plate. Using this original screw is crucial to maintaining the correct air gap (distance from the flywheel) and preventing the coil from shifting due to the intense vibrations of the engine at high RPMs. The cylindrical Allen head allows for precise and secure tightening.