Nissens 831377 Engine Auxiliary Water Pump

Nissens Auxiliary Water Pump 831377

The Nissens 831377 is an electric auxiliary water pump built for thermal management in select Mercedes-Benz and Smart applications. It uses a 12V electric design with an oval connector shape and a plastic/steel housing for OE-style fitment and function.

Compatible with Mercedes-Benz GLA250 and CLA250 applications, as well as Smart Fortwo models listed below, this auxiliary pump supports coolant circulation where additional flow is required. The Nissens 831377 is a direct-fit replacement for vehicles that use an electric auxiliary pump in the cooling system.

Key Features

• Electric auxiliary water pump for engine cooling system support
• 12-volt design
• Oval connector shape
• Plastic / steel housing construction
• No pulley included
• No gasket or seal included
• No mounting bracket included
• No bolts included

Product Details

Nissens develops thermal and engine efficiency components to meet aftermarket service needs with consistent manufacturing standards. Part number 831377 is an auxiliary water pump intended for vehicles that rely on electric coolant circulation, helping maintain proper coolant movement through the system during operation. This part cross-references Bosch 039202320K for the same application.

Vehicle fitment includes Fits 2015-2020 Mercedes-Benz GLA250, N/A; Fits 2014-2019 Mercedes-Benz CLA250, N/A; and Fits 2013-2017 Smart Fortwo, N/A. If you are searching for an auxiliary water pump for Mercedes-Benz GLA250, Mercedes-Benz CLA250, or Smart Fortwo cooling system service, Nissens 831377 is the listed application.

What It Helps Address

• Loss of auxiliary coolant circulation
• Cooling system flow issues tied to an electric pump failure
• Overheating concerns related to reduced coolant movement
• Temperature control problems during engine operation
• Cooling system fault codes associated with pump performance

Installation Notes

Confirm connector style, voltage, and mounting points before installation. Because no gasket, seal, bracket, pulley, or bolts are included, reuse or source the required service parts separately as specified by the vehicle repair procedure. Verify the cooling system is properly drained, filled, and bled after installation to prevent air pockets.

Quality Assurance

Nissens is a market-leading manufacturer focused on thermal and engine efficiency components, and this part is produced under the brand’s Genuine Nissens Quality standards. Part number 831377 is built for the listed Mercedes-Benz and Smart applications and is supported by Nissens’ ongoing aftermarket product development.