Ariens 52611500 – Replacement MPN: 52611500 PINION & SPROCKET W/BEARINGS Genuine Ariens Part # 52611500. Ariens 52611500 Pinion & Sprocket W/Bearings Track Pro Hydro 36 32 28. Ariens Part Number: 52611500 Compatible with the following Models: Ariens Pro 36 Hydro Ariens Pro 32 Hydro Track Ariens Pro 32 Hydro Ariens Pro 28 Hydro Track Ariens Pro 28 Hydro. 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.