Nissens 831050 Engine Auxiliary Water Pump

Nissens 831050 Auxiliary Water Pump

The Nissens 831050 is an engine auxiliary water pump built for Mercedes-Benz cooling system applications that require a 12V electric pump with a rectangular connector. It is a direct-fit style replacement for select Mercedes-Benz G-Class and SLK models, including G550, G55 AMG, G500, SLK230, SLK320, and SLK32 AMG applications.

• 12V engine auxiliary water pump
• Rectangular connector shape
• Housing material: plastic / steel
• No pulley included
• No gasket or seal included
• No mounting bracket included
• No bolts included

Cooling System Function

Built by Nissens, a manufacturer focused on thermal and engine efficiency components, this auxiliary water pump is developed for consistent aftermarket replacement performance. Part number 831050 is used in Mercedes-Benz cooling circuits where supplemental coolant circulation is required, helping maintain proper coolant flow in the engine cooling system. This part cross-references Bosch 0392020026 and Gates 41520E for the same application.

Vehicle Fitment

• Fits 2009-2015 Mercedes-Benz G550, N/A.
• Fits 2005-2011 Mercedes-Benz G55 AMG, N/A; Engine Cooling (Optional).
• Fits 2002-2008 Mercedes-Benz G500, N/A.
• Fits 2003-2004 Mercedes-Benz G55 AMG, N/A.
• Fits 2001-2004 Mercedes-Benz SLK230, N/A; Power_18.00_W.
• Fits 2002-2004 Mercedes-Benz SLK32 AMG, N/A; Power_18.00_W.
• Fits 2001-2004 Mercedes-Benz SLK320, N/A; Power_18.00_W.
• Fits 2000 Mercedes-Benz SLK230, N/A.

Common Replacement Reasons

• Electric auxiliary pump failure causing reduced coolant circulation
• Cooling performance issues in Mercedes-Benz G550 or G500 applications
• Intermittent operation in G55 AMG auxiliary cooling systems
• Replacement for worn or leaking auxiliary pump assemblies
• Restoring coolant flow in SLK230, SLK320, or SLK32 AMG cooling circuits

Installation Notes

Verify connector style, voltage, and mounting layout before installation. This pump does not include a pulley, gasket or seal, mounting bracket, or bolts, so reuse or source the required related components as needed for the vehicle application. Confirm the exact Mercedes-Benz fitment by year, model, and cooling-system configuration before ordering part number 831050.

Quality Assurance

Nissens develops and manufactures thermal management components to consistent production standards, and this auxiliary water pump reflects that focus on engine efficiency and cooling-system reliability. Part number 831050 is built as a quality replacement for the listed Mercedes-Benz applications.