Airtex AW4034 Automotive Engine Water Pump Assembly

Airtex AW4034 is a direct-fit automotive engine water pump assembly designed to replace a failed cooling pump in a wide range of cars and light trucks. The AW4034 is widely listed in cross-reference guides as interchangeable with Gates 43051 and with several OEM-equivalent numbers, including AC Delco 252-670 and 251-515, 18-351, and 98076, as well as US Motor Works US4034, among others. This interchangeability pattern is reflected in multiple retailer listings for the product (for example, Airtex AW4034 Water Pump appears in Autoplicity, Walmart, and other catalog pages under the AW4034 designation). As an Airtex part, AW4034 is built to a replacement pump specification intended to restore the original coolant flow to the engine, helping maintain operating temperatures and protect the radiator, hoses, and seals. Typical applications cover a broad spectrum of passenger cars and light trucks that originally used the referenced cross numbers; however, fitment should be confirmed against the vehicle’s VIN or a trusted cross-reference guide before purchase. The AW4034 designation is a common cross-reference for the original-equipment pump in many aftermarket catalogs, making it a convenient choice for replacement when the goal is an equivalent pump with similar mounting points and impeller design.