2054978 1036618 SPROCKET FITS FOR DEERE 50D 50G HITACHI ZX55 ZX50 ZX48 ZX40. MOTTROL USA EXCAVATOR PARTS DEPOT YOUR BEST SOURCE FOR OEM QUALITY EXCAVATOR PARTS. Do not compensate your labor, towing, repair, rental expenses or any other related expenses, please understand. For the parts described with both part number and application machine model or engine model, please make sure to order according to the part number, the application machine model or engine model is just for reference.