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.

Air Injection Reaction Check Valve 911-170 Features:

• Fits 2005-2013 Subaru Forester; 2006-2014 Subaru Impreza; 2013-2021 Subaru WRX STI
• Direct replacement — this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles
• Restores functionality — this valve is made to fit and fully restore part functionality after the original valve fails
• Durable construction — this part is made from quality materials to ensure reliable performance and long service life
• Trustworthy quality — backed by team of product experts in the United States and more than a century of automotive experience