The DAYCO DEP1020 auxiliary water pump is designed to maintain optimal coolant flow, specifically for the cabin heating system. It plays a crucial role in ensuring consistent cabin temperature, especially during colder weather or when the main engine thermostat is closed. Proper functioning of this pump is essential for the comfort of the vehicle's occupants. A failing auxiliary pump can lead to reduced or no heat output from the cabin vents, even when the engine is at operating temperature. DAYCO is a trusted name in the automotive aftermarket, known for producing reliable and durable components. This auxiliary water pump is built to meet or exceed OE specifications, providing a dependable solution for your vehicle's cooling needs.