Bosch 0392023004 Engine Auxiliary Water Pump

Bosch Engine Auxiliary Water Pump

Bosch part number 0392023004 is a new engine auxiliary water pump built to OE specifications for Mercedes-Benz cooling and climate-control applications. It is 100% tested for function, with torque testing for impeller-to-shaft integrity and vacuum leak testing for sealing performance.

Compatible With Mercedes-Benz GLA250, CLA250, E350, Sprinter, GLC, GLS, AMG GT, and other listed applications, this Bosch auxiliary water pump supports precise coolant circulation where the vehicle’s system requires an electric pump. Part number 0392023004 is also cross-referenced to Genuine 2118350264 for the same application.

Key Features

• Brand: Bosch Engine Auxiliary Water Pump
• Part number: 0392023004
• 100% new construction
• Built to exact original equipment specifications
• Torque tested to verify impeller-shaft mating
• Vacuum leak tested to verify sealing at the housing, seals, tube binding, and plug areas
• Clockwise rotation
• 1 inlet port and 1 outlet port
• 13 W water pump rating
• OE mating parts and accessories used to verify fitment where the isolator grommet and bracket are reused

Detailed Description

This Bosch engine auxiliary water pump is designed for Mercedes-Benz vehicles that use an electric auxiliary pump for heating, cooling, or system circulation. It is a direct-fit replacement for many Mercedes-Benz models across the GLA, CLA, C-Class, E-Class, GLE, GLS, Sprinter, and AMG lines, including applications such as 2021-2024 Mercedes-Benz GLA250, 2020-2023 Mercedes-Benz CLA250, and 2010-2023 Mercedes-Benz Sprinter 2500. The Bosch 0392023004 pump is engineered for OE-style fitment and verified against original mating components where reusable brackets or isolators apply.

For buyers searching Mercedes-Benz auxiliary water pump replacement, Bosch 0392023004, or engine auxiliary water pump for Mercedes-Benz Sprinter and AMG models, this part provides a focused OE-spec solution. It is also listed with interchange references including Genuine 2118350264.

What It Helps Address

• Loss of auxiliary coolant circulation
• Heating or climate-control circulation faults tied to the auxiliary pump circuit
• Leak concerns from a worn pump housing or seal area
• Impeller or shaft wear that affects pump operation
• Fitment issues when replacing an OE auxiliary pump on listed Mercedes-Benz models

Installation Notes and Tips

Confirm the vehicle’s exact year, model, and configuration against the fitment list before ordering. This pump does not include mounting hardware, a gasket or seal, or a mounting bracket. Reuse the isolator grommet and bracket only when the original components are serviceable and the application calls for reuse. Verify clockwise rotation and port orientation during installation.

Quality Assurance

Bosch tests each water pump for proper function, including torque verification and vacuum leak testing, to help confirm sealing and internal assembly integrity before installation. The part is manufactured as a new OE-spec replacement for Mercedes-Benz auxiliary water pump applications.