Fits Kohler models SV730, SV735, SV740, SV840. Kohler 12 volt Digital Spark Advanced Ignition (DSAI) has been discontinued. A new magneto powered spark advance system MDI has taken its place. This new MDI system no longer requires 12 volts to function. DSAI Ignition System parts and kits will no longer be available. Replacement of current DSAI ignition parts requires an MDI conversion kit. The MDI kits require use of the original engine wire harness.After the conversion from DSAI to MDI Ignition, the modules can be replaced individually.