John Deere JD8554 Eccentric Locking Collar is a John Deere Equipment Manufacturer (OEM) part designed with a 1 inch inner diameter for a precise fit. This high-quality locking collar ensures reliable performance and durability, making it an essential component for maintaining your equipment's efficiency. If you need assistance 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) by calling 1-800-345-2396, or you can reach out via email for expert support. Hartville Hardware strives to provide accurate part recommendations sourced from reliable systems, but compatibility may change without notice, so contacting customer support is advised if you are uncertain about the part you need. Model Number: JD8554