Vaico V20-1591 Engine Water Pump Pulley

Engine Water Pump Pulley for BMW Cooling Service

The Vaico V20-1591 engine water pump pulley is a direct-fit cooling system component for select BMW applications. Built to match the specified pulley dimensions and 6-rib belt profile, it supports proper belt tracking and water pump drive operation on compatible BMW 3 Series, 5 Series, X3, X5, Z3, and Z4 models.

Key Features

• Engine water pump pulley for belt-driven cooling system service
• 6-rib design for the specified V-belt routing
• Outer diameter: 122 mm; inner diameter: 40 mm
• Height: 41.5 mm; width: 122 mm; width 1: 42 mm
• Vaico V20-1591 for BMW cooling and accessory drive applications
• Cross-reference: Febi-Bilstein 30125

Product Details

VAICO line components are built for European vehicle repair needs, with attention to fit, form, and application-specific dimensions. This pulley measures 122 mm in outer diameter, 40 mm in inner diameter, and 41.5 mm in height, with six ribs to match the belt configuration used on the listed BMW engines. The Vaico V20-1591 is used in cooling system drive assemblies where pulley alignment and belt engagement are critical for stable operation.

Compatible With BMW 325Ci, 330Ci, X3, X5, 325i, 325xi, 330i, 330xi, 525i, 530i, Z4, Z3, 323Ci, 323i, 328Ci, 328i, and 528i model years shown in the fitment data. This part number, V20-1591, is also referenced by Febi-Bilstein 30125 for the same application.

Common Issues This Part Helps Address

• Worn or damaged water pump pulley surfaces
• Belt noise caused by pulley wear or misalignment
• Improper belt tracking on the accessory drive
• Cooling system drive concerns related to pulley damage
• Replacement needs after a ripped V-belt event

Installation Notes and Tips

Verify pulley diameter, rib count, and mounting dimensions before installation. Inspect the belt, tensioner, and adjacent accessory drive components for wear before fitting the new pulley. For best results, confirm vehicle-specific fitment by model year and engine configuration before ordering or installation. Fits 2001-2006 BMW 325Ci, 2001-2006 BMW 330Ci, 2004-2006 BMW X3, 2001-2006 BMW X5, 2001-2005 BMW 325i, 2001-2005 BMW 325xi, 2001-2005 BMW 330i, 2001-2005 BMW 330xi, 2001-2005 BMW 525i, 2001-2005 BMW 530i, 2003-2005 BMW Z4, 1999-2002 BMW Z3, 2000 BMW 323Ci, 1999-2000 BMW 323i, 2000 BMW 328Ci, 1999-2000 BMW 328i, and 1999-2000 BMW 528i.

Quality Assurance

Vaico replacement parts are engineered to meet application-specific requirements for European vehicle service. This pulley is specified for the listed BMW fitments and dimensions to support accurate replacement during cooling system repair.