Dorman 911-155 Secondary Air Injection Check Valve

Reliable Secondary Air Injection Check Valve for Ford Focus

The Dorman 911-155 secondary air injection check valve is designed to maintain proper air flow in the emission control system of your Ford Focus. Crafted from durable cast aluminum, this valve ensures consistent performance under a wide range of operating conditions.

• Constructed from cast aluminum for strength and durability
• Black and silver finish for corrosion resistance
• Inlet size: 0.748 inches; outlet size: 0.629 inches
• Maximum pressure rating of 15 psi
• Reed valve type for reliable air flow control
• Operates effectively within a temperature range of -40°C to 125°C
• Includes one secondary air injection check valve per package

Durable Design and Precise Fitment for Ford Focus

The Dorman 911-155 secondary air injection check valve is engineered specifically for Ford Focus models, ensuring a precise fit and optimal function within the vehicle’s emission control system. The cast aluminum construction provides resistance to wear and corrosion, while the black and silver finish adds an extra layer of protection. The valve’s reed design allows it to regulate air flow efficiently, preventing backflow and supporting the secondary air injection system’s role in reducing emissions.

Purpose and Common Issues Addressed

• Prevents exhaust gases from flowing back into the air injection system
• Helps maintain proper air flow to reduce harmful emissions
• Addresses check valve failure symptoms such as rough idling or increased emissions
• Supports compliance with emission standards by ensuring system integrity
• Reduces risk of damage to other emission control components

Installation Notes and Tips

When installing the Dorman 911-155 secondary air injection check valve on your Ford Focus, ensure the valve is oriented correctly according to the airflow direction. Inspect surrounding hoses and connections for wear or damage and replace as necessary to maintain system integrity. Use appropriate tools to avoid damaging the cast aluminum body during installation. It is recommended to consult the vehicle’s service manual for specific torque specifications and installation procedures.

Quality Assurance and Warranty

Dorman manufactures the 911-155 secondary air injection check valve to meet or exceed OEM standards for fit, form, and function. The valve is tested for durability and performance within the specified temperature and pressure ranges. While specific warranty details may vary, Dorman typically offers coverage against defects in material and workmanship to ensure reliability and customer confidence.