This used Brake Pinion Shaft, compatible with OEM part number R45779, is designed for John Deere equipment. This component fits John Deere 4320, 4230, 4430, 7520, 4020, and 4000 series tractors, as well as John Deere 570B and 570A Graders, John Deere JD600 Tractors, and John Deere 644A Wheel Loaders. Always verify part number and equipment model before ordering to ensure proper fit.