Bosch 05098398AA Electric Auxiliary Water Pump

The Bosch 05098398AA is an electric auxiliary water pump designed to maintain optimal coolant circulation in the climate control system. This pump circulates warm coolant to the heater core, ensuring consistent cabin heating performance even during low-speed driving or idle conditions.

Key Features:

• 100% new design meeting exact original equipment specifications with full functionality testing
• Electric operation with 2-pin connector
• High service life and power density, operates quietly at temperatures up to 125°C
• Torque and vacuum leak tested to ensure proper impeller-shaft mating and sealing
• Compatible with OE mating parts for proper fitment when isolator grommet and bracket are reused
• Features 18.6mm/18.5mm inlet/outlet pipe diameter for direct replacement

OEM Cross-Reference Numbers: 0392020026, 0018351364, 0018351164, A0018351364, 5098398AA, 5W-3001, 902-088, AWP-2725

This genuine Bosch auxiliary water pump is commonly used in Mercedes-Benz vehicles equipped with air conditioning systems. Most Mercedes-Benz vehicles made after 1999 utilize these auxiliary coolant pumps, from C-Class to S-Class models, as well as Dodge and Freightliner Sprinter vans.