Four Seasons 89042 Engine Auxiliary Water Pump

Four Seasons 89042 Auxiliary Water Pump

The Four Seasons Water Pump 89042 is an electric auxiliary water pump built for engine coolant circulation in select Audi applications. It uses a plastic housing, 20.00 mm inlet and outlet diameters, and a 2-pin terminal layout for a direct-fit replacement approach.

Compatible With 2005-2009 Audi A8 Quattro and 2004-2005 Audi Allroad Quattro, this auxiliary water pump is a practical choice when servicing engine auxiliary cooling circuits. Four Seasons 89042 is a new part that meets or exceeds OEM requirements.

Key Features

• Electric auxiliary water pump for engine coolant components
• Plastic construction for lightweight packaging
• 20.00 mm inlet and outlet pipe diameters
• 2-terminal pin configuration
• New replacement part that meets or exceeds OEM specifications
• Four Seasons Water Pump line replacement for select Audi cooling systems

Detailed Product Overview

Four Seasons 89042 is engineered as an auxiliary water pump for engine coolant circulation, not as a primary mechanical pump. The compact 3.25-inch width, 2.50-inch overall height, and 4.25-inch depth support tight packaging in modern cooling systems. This part cross-references Dayco 89042 for the same application.

For Audi A8 Quattro and Audi Allroad Quattro cooling service, the Four Seasons 89042 water pump provides a direct replacement option where an electric auxiliary pump is specified. The part number 89042 is also referenced under several interchange numbers, making it easier to verify application during repair planning.

Common Problems This Part Can Address

• Loss of auxiliary coolant circulation
• Cooling system fault codes related to the electric pump circuit
• Insufficient coolant flow through auxiliary engine cooling passages
• Overheating concerns tied to a failing auxiliary pump
• Noisy or non-functioning electric water pump operation

Installation Notes and Tips

Confirm the vehicle uses an electric auxiliary water pump with 20.00 mm inlet and outlet connections before ordering. Verify the 2-pin terminal layout and compare the original pump dimensions to the Four Seasons 89042 to ensure proper fitment in the available mounting space.

For 2005-2009 Audi A8 Quattro and 2004-2005 Audi Allroad Quattro applications, inspect hoses, connectors, and surrounding coolant components during replacement to help avoid repeat cooling system issues. Always follow the vehicle service procedure for coolant draining, refilling, and bleeding.

Quality Assurance

Four Seasons 89042 is a new auxiliary water pump built to meet or exceed OEM requirements for the listed Audi applications. The Four Seasons Water Pump line is focused on replacement cooling components for engine coolant system service.