5258401S 5258402 AET1040 Ignition Coil For Kohler M18 M20 MV20One New Aftermarket Replacement Ignition Coil (Solid State Module) for Kohler Magnum Engines This aftermarket replacement solid state ignition coil module fits Kohler Magnum single cylinder and twin cylinder engines used in riding lawn mowers, lawn tractors, and garden tractors. The ignition coil generates the high voltage spark needed for reliable engine starting and smooth operation across all engine operating conditions. Compatible Models Kohler