KitchenAid mixer worm gear 9709231 Replacement Kitchen Aid stand mixer hub gear fits 6 quart models beginning withKD2661, KT2651, KP2671, KP2671X, KV25HOX, KP26M1X, KP2670.Original KitchenAid part numbers: 9709231, 9706770, 9703699, 9706590, 9706750, 9703446.Older models with serial numbers before WL46 may use a different gear please inspect your gear to verify fit.