URO 11517504077PRM Engine Water Pump Pulley

BMW Engine Water Pump Pulley Upgrade

This URO engine water pump pulley is a heavy duty aluminum upgrade for select BMW applications. It replaces the failure-prone OEM plastic pulley with a CNC-machined design built to maintain proper belt alignment and OE-style clearances.

Built for the BMW 550i, 650i, 750i, 750Li, X5, 545i, 645Ci, 745i, and 745Li, this pulley is identified by part number 11517504077PRM.

Key Features

• High-grade aluminum construction in place of OEM plastic
• CNC-machined to OE water pump pulley dimensions
• 5-groove design for serpentine belt applications
• Fixed pulley style with bolted attachment
• Black finish with corrosion-resistant surface protection
• URO Premium heavy duty aluminum upgrade line
• Part number 11517504077PRM for direct identification

Product Details

URO Premium re-engineers failure-prone cooling system components with stronger materials and revised construction. This water pump pulley is made from aluminum and steel, with a 128 mm outside diameter and 1 in. width, to match OE dimensions for proper fit and belt tracking. It is intended for BMW cooling system service where the original plastic pulley can crack, warp, or lose alignment under heat and vibration. Cross-reference part numbers include Febi-Bilstein 38328 and URO-008649 for the same application.

What This Part Helps Address

• Cracked or broken OEM plastic water pump pulley
• Belt misalignment caused by pulley wear or distortion
• Noise from a damaged or out-of-round pulley
• Cooling system service on BMW engines with serpentine belt drive
• Heat- and vibration-related pulley failure

Installation Notes

Verify pulley dimensions, groove count, and belt routing before installation. This pulley uses a bolted attachment and is manufactured to OE water pump pulley dimensions for clearance and alignment. On BMW 550i, 650i, 750i, 750Li, X5, 545i, 645Ci, 745i, and 745Li applications, inspect the water pump and serpentine belt condition during service to confirm the rest of the drive system is in good condition.

Quality Assurance

URO Premium products are built with upgraded materials and revised engineering to improve durability over the original design. This part carries a Limited Lifetime Warranty and the URO Premium seal, and the PRM suffix distinguishes it from the OEM counterpart. Part number 11517504077PRM is made for direct replacement use on the listed BMW applications.