Dorman 911-340 Secondary Air Injection Check Valve

Overview of the Dorman Secondary Air Injection Check Valve

The Dorman 911-340 Secondary Air Injection Check Valve is designed to support emission control systems in select Buick and Cadillac vehicles. Engineered with durable cast aluminum, this solenoid valve ensures reliable operation within the air injection system of your Buick Lucerne or Cadillac DTS.

• Constructed from cast aluminum for durability and corrosion resistance
• Adjustable design with a 10-inch length for precise fitment
• Thread diameter of 6 and mounting hole diameter of 0.25 inches for secure installation
• Two ports with inlet size of 0.887 inches and outlet size of 0.715 inches
• Operates within a temperature range of -40°C to 125°C
• Maximum pressure rating of 5 psi suitable for secondary air injection systems
• Finished in black and silver for corrosion protection and visual inspection
• Includes one solenoid-type check valve per package

Detailed Product Description

The Dorman 911-340 Secondary Air Injection Check Valve plays a critical role in the emission control system by preventing exhaust gases from flowing back into the air injection system. Its solenoid valve type design allows for controlled air flow, which helps reduce harmful emissions during cold engine starts. The valve’s cast aluminum construction provides strength and resistance to heat and corrosion, essential for the demanding environment under the hood. With an adjustable length of 10 inches and precise thread and mounting hole dimensions, this valve is engineered for a secure and accurate fit in Buick Lucerne and Cadillac DTS models.

Compatible Vehicles and Common Applications

• Compatible with Buick Lucerne models requiring secondary air injection system maintenance
• Designed for Cadillac DTS vehicles to maintain proper emission control function
• Used to address issues such as air injection system failure, emission test failures, and check engine light triggers related to secondary air injection
• Helps resolve backflow problems and air injection valve malfunctions

Installation Notes and Tips

• Ensure the vehicle is cool before installation to avoid injury from hot components
• Verify the thread diameter and mounting hole size match your vehicle’s specifications
• Check the valve orientation to maintain proper air flow direction
• Use appropriate tools to avoid damaging the cast aluminum valve body
• Inspect related air injection system components for wear or damage during installation

Quality Assurance and Warranty Information

Dorman manufactures the 911-340 Secondary Air Injection Check Valve to meet or exceed OEM standards for fit, form, and function. The valve is tested for durability under a wide temperature range from -40°C to 125°C and pressure up to 5 psi to ensure reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in the product’s quality.