Vaico V20-50042 Engine Water Pump

Engine Water Pump for BMW Cooling Service

Vaico V20-50042 is an engine water pump built for BMW cooling system service with a metal impeller and mechanical operating mode. It includes a seal and is listed for select BMW X5, 545i, 645Ci, 745i, and 745Li applications.

Key Features

• Metal impeller construction for cooling system service
• Mechanical operating mode
• Supplied with seal
• Dimensions: 285 mm length, 175 mm width, 180 mm height
• Vaico VAICO part number V20-50042
• Cross-references Graf PA1040 and Hepu P488 for the same application

Detailed Description

Vaico V20-50042 is an aftermarket engine water pump for BMW cooling systems that require a metal impeller design. The mechanical pump layout supports direct coolant circulation in the engine cooling circuit, while the included seal helps support a proper service replacement. This part number is referenced for BMW X5, BMW 545i, BMW 645Ci, BMW 745i, and BMW 745Li applications, making it a focused choice for BMW water pump replacement searches and cooling system repair work. The VAICO product line covers replacement components built to match common OE-style service needs, and V20-50042 is cataloged with OE reference PA10206.

What It Helps Address

• Coolant circulation problems caused by a worn water pump
• Engine overheating linked to pump impeller wear or failure
• Coolant leaks at the pump sealing surface
• Noisy or inefficient mechanical pump operation
• Cooling system service on select BMW X5 and 7 Series models

Installation Notes and Tips

Confirm engine application and OE reference before installation. Inspect the mating surfaces, coolant passages, and adjacent cooling components during service. Replace coolant according to the vehicle service procedure and verify there are no leaks after installation. This part is listed for BMW X5 2004-2006, BMW 545i 2004-2005, BMW 645Ci 2004-2005, BMW 745i 2004-2005, and BMW 745Li 2002-2005; one 2004 BMW 745i listing notes production from 10/2003.

Quality Assurance

Vaico V20-50042 is cataloged as an aftermarket replacement water pump with metal impeller construction and seal included. It is cross-referenced to OE number PA10206 and related aftermarket numbers for the same application, supporting parts lookup for BMW cooling system repair.