"Universal" This module is suitable for 2 leg and 3 leg ignition coils in single cylinder engines. This module is not recommended for use on engines equipped with battery ignition or flywheels with multiple magnets. Widely used in 2 and 4 cycle gasoline engines as in: lawnmowers, generators, pumps, tillers, compact garden tractors, chainsaws, brush cutters, dusters, trimmers, go-karts and snowblowers. Transistorized Ignition. Easy to install (for quick and easy starting). WaterProof, operates in any weather conditions. Die cast aluminum housing.