Rotary Corp brand aftermarket product. Rotary Corp Brand Electric Starter Kawasaki 99996-6121, 21163-7025, 21163-7021, 21163-0757, 21163-0755. Delco style 12 volt, 10 tooth, 0.8kw. Permanent Marnet Gear Reduction. models FX751V, FX801V, FX850V, FX921V & FXT00V. For Mower Z-TRAK Z830A, For AUC12593, MIA11257. Used also on Wright Stander.