Vaico V20-50012 Engine Water Pump

Engine Water Pump for BMW Cooling Service

The Vaico V20-50012 engine water pump is a mechanical replacement built for BMW cooling system service. It features a metal impeller, a housingless design, and includes a water pump seal ring plus gaskets/seals for a more complete repair on select BMW 3 Series, 5 Series, X3, X5, Z3, and Z4 applications.

• Mechanical engine water pump with metal impeller
• Housing type: without housing
• Includes water pump seal ring
• Includes gaskets/seals
• Part number: V20-50012
• Brand line: VAICO replacement component for BMW cooling system maintenance

Fitment and Application Details

Compatible With BMW cooling system repairs across multiple model years, including Fits 2001-2006 BMW 325Ci, N/A; Fits 2001-2006 BMW 330Ci, N/A; Fits 2004-2006 BMW X3, N/A; Fits 2001-2006 BMW X5, N/A; and Fits 2003-2005 BMW Z4, N/A. Additional coverage includes BMW 320i, 325i, 325xi, 330i, 330xi, 525i, 530i, Z3, 323Ci, 323i, 328Ci, 328i, 528i, M3, 323is, 328is, and 325is applications listed in the fitment data.

This part cross-references Gates 21730 and Hepu P472 for the same application.

What This Water Pump Helps Address

• Coolant circulation problems caused by a worn pump
• Overheating from reduced coolant flow
• Coolant leaks at the pump sealing surfaces
• Noisy or inefficient mechanical pump operation
• Cooling system service on BMW 325Ci, 330Ci, X3, and X5 models

Installation Notes and Tips

Verify engine code, pulley configuration, and seal requirements before installation. This pump is supplied without housing and is listed with seal ring and gaskets/seals, so inspect the mating surfaces, coolant passages, and adjacent cooling components during service. Always follow the vehicle manufacturer’s cooling system bleed procedure after installation.

Quality Assurance

VAICO supplies aftermarket replacement parts for European vehicle maintenance, and this water pump is cataloged with OE-style fitment references for BMW cooling system applications. Confirm part number V20-50012 against the vehicle’s original pump specification before ordering.