Nissens 831075 Engine Auxiliary Water Pump

Nissens Auxiliary Water Pump for BMW Applications

The Nissens 831075 engine auxiliary water pump is built for BMW cooling-system service where precise coolant circulation matters. It is a 12-volt unit with a D-shape connector, plastic/steel housing, and included bolts for a direct replacement workflow on supported BMW models.

Compatible With BMW 640i, 535i, X3, X5, Z4, and related applications, this Nissens auxiliary pump is a practical choice for restoring coolant flow in vehicles that rely on an electric auxiliary pump for thermal management. Part number 831075 is also referenced in aftermarket cross listings for the same application.

Key Features

• Engine auxiliary water pump for BMW cooling-system service
• 12-volt electrical design
• D-shape connector for application-specific fitment
• Plastic / steel housing construction
• Bolts included
• No pulley included
• No gasket or seal included
• No mounting bracket included

Detailed Product Overview

Nissens 831075 is an auxiliary water pump developed for vehicles that use an electric coolant circulation pump to support engine temperature control and related thermal functions. The unit is designed around the listed BMW fitments, including 2012-2018 BMW 640i, 2008-2016 BMW 535i, 2011-2017 BMW X3, 2011-2015 BMW 740i, and 2009-2016 BMW Z4 applications. It also fits additional BMW platforms such as 535i GT, X4, X5, X6, 335i, 135i, ActiveHybrid 5, ActiveHybrid 7, and 1 Series M models within the stated year ranges.

Nissens positions its thermal-management parts around consistent manufacturing standards and ongoing product development for modern aftermarket needs. This part number, 831075, cross-references Airtex AW6681 and US Motor Works US6681 for the same application.

What This Pump Helps Address

• Loss of auxiliary coolant circulation
• Cooling-system warning lights related to pump performance
• Overheating concerns tied to electric pump failure
• Inconsistent cabin heat on vehicles using auxiliary coolant flow
• Noisy or non-functioning auxiliary pump operation

Installation Notes and Tips

Confirm connector style, voltage, and vehicle-specific fitment before installation. Because the gasket or seal is not included, inspect the sealing components and replace them as needed during service. Verify the mounting location and transfer any required surrounding components according to the vehicle’s service procedure.

Quality Assurance

Nissens develops thermal and engine-efficiency components for the aftermarket with a focus on consistent production standards and application-specific fitment. Part number 831075 is built to meet the requirements of supported BMW cooling-system applications.