The Air Injection Reaction Check Valve from 911-169 and Dorman - OE Solutions is an essential part for maintaining the dependability and performance of your vehicle. This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for durability and reliable performance. With direct replacement and restored functionality, this valve is made to fit and fully restore part functionality after the original valve fails. It is made from quality materials to ensure reliable performance and long service life, backed by a team of product experts in the United States and more than a century of automotive experience. This check valve is a great option for restoring your vehicle to the original manufacturer's specifications. It is designed to provide a secure connection between the air injection system and the exhaust manifold, making sure that the air injection system is working properly. This check valve is a great choice for those looking for a reliable and long-lasting product, backed by the quality and expertise of 911-169 and Dorman - OE Solutions.