HM4509C‑1 automotive coolant heating & circulation pump, designed for vehicle coolant liquid heating and water‑cycle heat dissipation. This electric auxiliary water pump delivers reliable liquid circulation for automotive heating and cooling systems. Built‑in brushless structure features low noise, long service life and stable output. Suitable for new energy vehicles, passenger cars and modified vehicle heating‑cooling loop applications. We support OEM & custom specification for bulk orders. Contact us for detailed parameters and quotation.