Airtex AW9045 Automotive Cooling System Water Pump

Airtex AW9045 Engine Water Pump is an aftermarket replacement that restores coolant flow in the Toyota Tercel cooling system by driving coolant from the engine block to the radiator and back, helping maintain safe operating temperatures. The AW9045 designation is listed across supplier catalogs as the standard pump for several Toyota Tercel 4‑cylinder engines, with interchange references including 16100‑19026, 16100‑19027, and 16100‑19028, and some listings identify it as the GWT‑43A Auto Water Pump for engine families 3A, 3A‑C, and 2A. As part of Airtex’s engine cooling line, it is designed to install in place of the original water pump on applicable Toyota Tercel models, delivering the required flow to keep the cooling loop pressurized and circulating. This pump is commonly used during cooling-system service and pump replacement to restore coolant circulation and prevent overheating in the specified engines, supporting consistent performance in daily driving and longer-term reliability.