Bosch 0392023457 Engine Auxiliary Water Pump - Left, Rear or Upper Left

Bosch Engine Auxiliary Water Pump for Mercedes-Benz

Bosch Engine Auxiliary Water Pump part number 0392023457 is a new OE-style replacement built to match original equipment specifications. It is tested for torque and vacuum sealing to help verify impeller-to-shaft integrity and housing sealing for dependable cooling system operation.

Key Features

• Brand: Bosch Engine Auxiliary Water Pump
• Part number: 0392023457
• 100% new construction
• Clockwise (right) rotation
• 1 inlet port and 1 outlet port
• Mixed-material construction
• 9 W water pump rating
• OE mating parts and accessories used for fitment verification

Product Details

This Bosch auxiliary water pump is designed for Mercedes-Benz cooling system applications that require precise fitment and reliable circulation support. Bosch verifies component mating with related OE parts such as pulleys, brake plates, housings, and tensioners to confirm proper alignment and installation fit. This part cross-references Mercedes-Benz 0005003500 for the same application. Bosch 0392023457 is a direct-fit choice for select Mercedes-Benz models, including C300, E350, GLC300, GLE350, GLE580, GLS580, S580, and Maybach S580 applications.

What It Helps Address

• Auxiliary coolant circulation concerns
• Cooling system flow loss at the rear or left-side auxiliary circuit
• Noise or performance issues related to a worn electric water pump
• Leak concerns from a pump housing or seal failure
• Fitment problems when replacing an OE Mercedes-Benz auxiliary pump

Installation Notes and Tips

Fits 2024 Mercedes-Benz CLA250, Rear. Fits 2024 Mercedes-Benz CLA35 AMG, Rear. Fits 2024 Mercedes-Benz GLB250, N/A. Fits 2024 Mercedes-Benz GLB35 AMG, N/A. Fits 2020-2024 Mercedes-Benz GLE580, Left. Fits 2021-2024 Mercedes-Benz GLE63 AMG S, Left. Fits 2021-2024 Mercedes-Benz GLE63 AMG S SUV, Left. Fits 2020-2024 Mercedes-Benz GLS580, Left. Fits 2021-2024 Mercedes-Benz GLS63 AMG, Left. Fits 2021-2024 Mercedes-Benz Maybach S580, N/A. Fits 2022-2024 Mercedes-Benz Maybach S680, N/A. Fits 2021-2024 Mercedes-Benz S580, N/A. Fits 2023-2024 Mercedes-Benz S580e, N/A. Fits 2019-2023 Mercedes-Benz C300, N/A. Fits 2022-2023 Mercedes-Benz CLA45 AMG, N/A. Fits 2020 Mercedes-Benz CLA45 AMG, N/A. Fits 2020-2023 Mercedes-Benz E350, N/A. Fits 2021-2023 Mercedes-Benz GLA45 AMG, N/A. Fits 2020-2023 Mercedes-Benz GLC300, N/A. Fits 2020-2023 Mercedes-Benz GLE350, N/A. Fits 2021 Mercedes-Benz CLA45 AMG, Upper Left.

Verify the mounting location, rotation direction, and port layout before installation. This pump does not include a gasket or seal, mounting hardware, or a mounting bracket.

Quality Assurance

Bosch tests each water pump for proper function, torque integrity at the impeller-shaft connection, and vacuum sealing to check for leaks in the housing, seals, tube binding, and plug areas. The part is built to original equipment specifications for Mercedes-Benz auxiliary cooling applications.