If you notice any of these symptoms above, you need to replace your air check valve. Installation is easy and doesn't take much time or require special tools. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind. The SOLO-SHOT â„¢ XL Single-Use Universal A/C Dye Syringe Injection Kit offers a quick and easy solution for detecting leaks in automotive air conditioning systems Features Condition: Brand New Secondary Air Injection Check Valve Direct Replacement, Easy Installation Strict QC & Fitment Tested Fitment: For Ford Fusion 2006-2009 L4 2.3L Petrol Black & Silver For Mercury Milan 2006-2009 L4 2.3L Petrol Black & Silver Reference Number 911-167, 6E5Z9F491A, 6E5Z9F491AA, 6E5Z9F491B Prop 65 warning WARNING: This product can expose you to chemicals including... Secondary Air Injection Check Valve Dorman 911-167 A failed check valve can cause check engine light to illuminate and exhaust emissions to increase. [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted secondary air injection check valve. Air Injection Check Valve A-Premium Secondary , Air Lebanon Air Check Valve [Reference Number]: 911-167, 911167, 6E5Z9F491A, 6E5Z9F491AA, 6E5Z9F491B [OE Design]: This air check valve is manufactured to the OEM specification to provide factory-fresh appearance and direct-fit. [Important Role]: The secondary air injection check valve plays an important role in reducing vehicle emissions. Due to high manufacturing standard, it will come with one year quality guarantee. [Vehicle Fitment]: Compatible with Ford Fusion 2006-2009 L4 2.3L; Compatible with Mercury Milan 2006-2009 L4 2.3L --- with 2 Pins