Hi there, I've searched PriceCheck for "Car Engine Water Pump Pulley For Bmw E36 E46 E39 E60 E61 E85 Z3 Z4 X3 X5" but didn't find any exact matches. However, a few related products may work for you: The "Auxiliary Water Pump Compatible With Bmw N13 Engine" for R1050 and the "Electric Water Pump For Bmw N54 N55" for R5900 could both help keep your engine's cooling system running smoothly. The electric water pump options may provide upgrades over the standard mechanical pump. Hopefully one of those will do the trick for you! As an experimental bot, I don't have access to the full catalogue though - my apologies I couldn't find the pulley you asked about specifically. Let me know if you need any other options.