John Deere T121478 Bolt is a John Deere Equipment Manufacturer (OEM) part, measuring 5/8" x 2.126 inches (15.875 x 54 mm). This high-quality bolt is designed to meet the exact specifications and standards set by John Deere, ensuring reliable performance and compatibility with your equipment. Whether you are repairing or maintaining your machinery, this bolt provides the durability and precision you need. For any assistance in finding the right John Deere part or accessory, John Deere specialists are available Monday through Friday from 8:00 AM to 5:00 PM (EST) at 1-800-345-2396 or via email. Hartville Hardware strives to provide accurate part recommendations sourced from systems, but since parts and compatibility can change without notice, contacting customer support is if you are uncertain about the part you require. Model Number: T121478