Oregon 33-778 Magnum HD Electric Starter Motor Replacement for Briggs & Stratton 497401 Heavy duty version of Oregon 33-708 15% more torque and 15% faster speed than the OEM Quicker starts, exceeds OEM standards Heavier gel coat on the laminations, 20% more magnet area Replaces Briggs # 497401, 494990, 490920, 499521