Ariens 53216300 – Replacement MPN: 53216300 U-JOINT ASSY Genuine Ariens Part # 53216300. Ariens 53216300 Gravely U Joint Assembly. Ariens Part Number: 53216300 Compatible with the following Models: Gravely Power-Brush 28 Ariens Sno-Brush 28 Ariens Power-Brush 28. We are proud to be a factory authorized retailer. We use several different carriers and choose the most economical for the item and destination based on the estimated transit time displayed. FixMyToys – A Division of Ball Equipment.