Auxiliary Water Pump – 0392020026 | Mercedes Sprinter Electric Coolant Pump

SKU: 0392020026 - qty 1

Maintain efficient coolant circulation and temperature control in your Mercedes Sprinter’s engine and heating system with this Auxiliary Water Pump – part #0392020026. This electric auxiliary pump supports your primary coolant system by pushing coolant through smaller circuits, such as the heater core or secondary passages, especially when the main water pump alone isn’t sufficient. Proper coolant circulation helps prevent hot spots, heater core failure, cabin heating issues, and engine temperature imbalances, ensuring reliable operation under varied driving conditions. The auxiliary pump is a common replacement part when the factory unit fails or your Sprinter experiences intermittent heating, engine warnings, or poor coolant flow. 

✔ Direct-Fit Auxiliary Coolant Pump

• Replaces Mercedes-Benz part 0392020026 with an electric pump designed to meet OEM specifications and deliver dependable coolant movement.

• Often used in Sprinter cooling/heating systems to circulate warm coolant through the heater core and improve heat distribution. 

✔ Helps Maintain Engine Temperature & Heater Performance

• Supplements the main cooling system to keep coolant moving during idle, low-speed driving, or when additional heat is needed in the cabin.

• Prevents cooling inefficiencies that can arise when the engine’s primary pump can’t fully serve the heater or secondary coolant circuits. 

✔ Durable & Simple Installation

• Built for straightforward replacement — ideal for professional mechanics or experienced DIYers.

• Designed to withstand repeated coolant exposure and electrical cycling inside the engine bay.

📌 Fitment Reminder: Verify this part fits your Sprinter’s engine type, model year, and cooling/heater system configuration before ordering — auxiliary water pumps can vary between Sprinter generations and setups.