Bosch 0392023366 Engine Auxiliary Water Pump

Bosch Engine Auxiliary Water Pump

The Bosch Engine Auxiliary Water Pump, part number 0392023366, is a new OE-style replacement built to match original equipment specifications. It is designed for precise fitment and verified performance in cooling-system applications on select INFINITI Q50 and Smart Fortwo models.

Key Features

• Brand: Bosch Engine Auxiliary Water Pump
• Part number: 0392023366
• Built to original equipment specifications for fit and function
• 100% tested for proper operation before release
• Torque testing checks impeller-to-shaft engagement
• Vacuum leak testing helps confirm sealing integrity across the housing, seals, tube connection, and plug
• OE components and accessories are used to verify mounting and component alignment

Detailed Description

Bosch 0392023366 is an engine auxiliary water pump for cooling-system service where a secondary coolant pump is required. The Bosch Engine Auxiliary Water Pump line focuses on OE-level fit verification, including checks for pulley, brake plate, housing, and tensioner interface where applicable. This part cross-references 4535000286 for the same application. Compatible vehicle coverage includes Fits 2014-2018 INFINITI Q50, N/A and Fits 2016-2017 Smart Fortwo, N/A, Contains Holder; Engine Auxiliary Water Pump. For shoppers searching by vehicle, this Bosch auxiliary water pump for INFINITI Q50 and Smart Fortwo applications is identified by part number 0392023366.

Common Uses

• Restoring auxiliary coolant circulation when the original pump is worn or leaking
• Addressing coolant flow issues tied to pump seal failure
• Correcting noise or binding related to impeller and shaft wear
• Replacing a pump that no longer maintains proper cooling-system pressure
• Supporting temperature control in vehicles that use a secondary water pump circuit

Installation Notes

Verify the year, make, model, and notes before ordering. For body fitment, use the exact application listed: Fits 2014-2018 INFINITI Q50, N/A and Fits 2016-2017 Smart Fortwo, N/A, Contains Holder; Engine Auxiliary Water Pump. Inspect the cooling system, electrical connections, and mounting points before installation, and confirm the replacement pump matches the original configuration. The part number 0392023366 should be matched against the vehicle’s existing pump and catalog listing.

Quality Assurance

Bosch tests these pumps for torque and vacuum leak performance to help confirm correct impeller engagement and sealing. The brand also verifies component fit using OE parts and accessories during assembly checks, supporting consistent installation on the listed INFINITI Q50 and Smart Fortwo applications.