9237507 Excavator Front Idler fits Hitachi ZX50U-3, John Deere 50D – Heavy Duty. Hitachi fits ZX50U-3, 9237507. John Deere fits 50D 50G, 9318048. Premium Rubber Tracks for Compact Track Loaders, Excavators and Multi-Terrain Loaders. Heavy-Duty Sprockets available for almost all compact equipment like Mini Excavators, Multi Terrain Loaders and Compact Track Loaders. Sprockets are made with special high strength-hardened steel and are designed to provide long service life and reliability under the most severe operating conditions. » Guaranteed fit for all major equipment brands like Bobcat, New Holland, John Deere, CAT, Case, and many more. These are high-quality replacement parts not affiliated with or endorsed by any trademarked company or brand. Any mentions of makes and models are for convenience only. We guarantee high quality products and service. If you have any questions, feel free to contact! We will respond as soon as possible. We do everything to make you fully satisfied. Residential, farm, ranch and lift gate extra charge. Please inspect the package before signing the bill of lading and inform us and carrier company for damages if any. We will be very grateful to you for leaving your feedback. Your satisfaction is our priority.