Airtex AW4040 Automotive Engine Water Pump Assembly

Airtex AW4040 Automotive Engine Water Pump Assembly restores reliable coolant circulation by replacing the factory water pump in many vehicles. As part of Airtex's OE replacement lineup, this pump drives coolant from the radiator through the engine and back to the radiator to help maintain proper operating temperatures and prevent overheating. The AW4040 is interchangeable with OE numbers E8FZ-8501-A, 42058, and WP-566, in addition to the AW4040 designation itself, indicating broad compatibility with vehicles that originally used those pumps. Manufactured by Airtex, a recognized name in automotive water pumps for the aftermarket, the AW4040 is designed to meet the standard front-engine, belt-driven pump configuration found in a wide range of passenger cars. When replacing a worn pump, selecting the AW4040 provides a direct-fit option that aligns with common Airtex design and performance expectations for coolant circulation and engine cooling reliability.