Gates 41578E Engine Auxiliary Water Pump - EGR Cooler, Heater or To Turbocharger

Gates 41578E Electric Auxiliary Water Pump

The Gates 41578E is an electric engine auxiliary water pump built for OE-style cooling and heating system performance. It uses a plastic housing and plastic impeller with standard rotation to support reliable coolant circulation in demanding driving conditions.

Gates Water Pump (Electric) products are part of a line focused on OE-performance replacement for modern vehicles that use electric coolant circulation. This pump is engineered for applications where the cooling system, heater circuit, or turbocharger cooling path depends on an auxiliary electric pump.

• Electric water pump for auxiliary coolant circulation
• OE Performance grade for direct replacement use
• Plastic housing and plastic impeller
• Standard impeller rotation
• Two outlet connections
• Contents: water pump only
• Part number: 41578E

Detailed Application Coverage

Compatible with select Audi and Volkswagen models that use an auxiliary electric pump in the heater, EGR cooler, or turbocharger circuit. Fitment includes Audi A5, A5 Quattro, A6, A6 Quattro, A7 Quattro, A8 Quattro, Q5, Q7, S7, S8, and Volkswagen Touareg applications. The Gates 41578E is also cross-referenced to Monroe Shocks & Struts 172286 and 182286 for the same application.

Use this pump when servicing a vehicle that requires stable coolant flow through the auxiliary cooling path. The Gates 41578E helps restore proper circulation in systems that rely on electric pump operation rather than a belt-driven design.

What It Helps Address

• Loss of coolant circulation in the auxiliary cooling circuit
• Heater performance issues caused by weak electric pump operation
• Turbocharger cooling concerns on listed Audi applications
• EGR cooler flow problems on listed Audi and Volkswagen applications
• Noise or inconsistent operation from a worn electric water pump

Installation Notes

Verify the vehicle’s original pump location and system type before installation. Confirm the outlet count, electric drive type, and application notes such as heater, EGR cooler, or to turbocharger routing. For Audi A8 Quattro, Audi Q5, and Volkswagen Touareg fitments, match the OE reference and connector layout to the existing unit. Part number 41578E should be checked against the vehicle’s original equipment number before replacement.

Quality Assurance

Gates manufactures this electric water pump using premium materials for durable operation and OE-quality fit. It is built to restore cooling and heating system performance on the listed Audi and Volkswagen applications.