Nissens 831077 Engine Auxiliary Water Pump

Nissens Auxiliary Water Pump for Mercedes-Benz

The Nissens 831077 engine auxiliary water pump is built for Mercedes-Benz cooling system applications that require reliable coolant circulation and stable thermal control. It features a 12-volt design, a D-shape connector, and a plastic/steel housing with a mounting bracket included for a direct-fit style replacement.

Compatible with select Mercedes-Benz S-Class, CL-Class, and CLK-Class models, this auxiliary water pump supports the cooling circuit on vehicles such as the Mercedes-Benz S550 and CL550. The Nissens 831077 is a practical choice when replacing a worn auxiliary pump in a vehicle with confirmed fitment.

Key Features

• Engine auxiliary water pump for thermal management applications
• 12-volt electrical design
• D-shape connector for vehicle-specific connection requirements
• Plastic / steel housing construction
• Mounting bracket included
• No pulley included
• No gasket or seal included
• No bolts included

Product Details

Nissens develops thermal and engine efficiency components for aftermarket use, and this auxiliary water pump reflects that focus with application-specific construction and fitment. Part number 831077 is listed for multiple Mercedes-Benz models, including the S550, CL550, CL600, CL63 AMG, CL65 AMG, S350, S400, S600, S65 AMG, S63 AMG, CLK550, and Maybach S550. This part cross-references Gates 41549E for the same application.

Common Problems This Part Can Address

• Weak or inconsistent auxiliary coolant circulation
• Cooling system performance issues caused by a failing electric pump
• Temperature control concerns during idle or low-speed operation
• Noise or wear from an aging auxiliary water pump
• Replacement needs on Mercedes-Benz cooling system service

Installation Notes and Tips

Verify connector style, voltage, and mounting points before installation. Because the gasket or seal is not included, inspect the sealing surfaces and replace any required sealing components separately. Confirm vehicle-specific fitment for your Mercedes-Benz S550, CL550, or other listed application before ordering. Part number 831077 should be matched to the original pump configuration for proper installation.

Quality Assurance

Nissens positions its products around Genuine Nissens Quality, with development and manufacturing focused on thermal and engine efficiency components for the aftermarket. The 831077 auxiliary water pump is built to meet those product standards for confirmed Mercedes-Benz applications.