Husqvarna 574355301 Throttle Trigger Genuine OEM AYP Part American Yard Products manufactures parts and equipment for leading brands in the industry. Those include Craftsman, Husqvarna, Poulan Pro, Poulan, Weed eater, Roper, Sears, Rally, EHP (Electrolux Home Products) and Yard Pro Fits Husqvarna models: 128LDX (966589201), 128DJX (966712501) 128LD (952711969),128C and 128CD This is the main trigger throttle mechanism attached to lower part of handle