Dorman 911-151 Secondary Air Injection Check Valve

Overview of the Dorman Secondary Air Injection Check Valve

The Dorman 911-151 Secondary Air Injection Check Valve is designed to maintain proper air flow within the emission control system of select Chevrolet, GMC, and Hummer vehicles. Engineered with durable metal construction and a spring-loaded valve, it ensures reliable operation under varying conditions.

• Constructed from durable metal with a natural finish
• Spring-loaded valve type for consistent performance
• Inlet size: 0.88 inches; outlet size: 1.04 inches
• Maximum pressure rating of 50 psi
• Operates effectively within a temperature range of -20 to 300 degrees Fahrenheit
• Includes valve, gasket, and mounting hardware for installation

Detailed Product Description

The Dorman 911-151 Secondary Air Injection Check Valve plays a critical role in the air injection system by preventing exhaust gases from flowing back into the air pump. Its metal construction provides strength and resistance to heat and corrosion, while the spring-loaded mechanism ensures the valve opens and closes precisely as needed. The valve’s inlet and outlet sizes (0.88 in and 1.04 in respectively) are designed to match OEM specifications for a secure fit. Rated for pressures up to 50 psi and capable of operating in temperatures ranging from -20 to 300 degrees Fahrenheit, this valve is suitable for demanding engine environments.

Compatible Vehicles and Applications

This secondary air injection check valve is compatible with the following vehicles:

• Chevrolet Canyon
• Chevrolet Colorado
• GMC Canyon
• GMC Colorado
• Hummer H3
• Hummer H3T

It is specifically designed to meet the emission control requirements of these models, ensuring proper function of the air injection system.

Common Issues Addressed by This Check Valve

• Prevents backflow of exhaust gases into the air injection pump
• Helps reduce emissions by maintaining proper air flow
• Eliminates air injection system failures caused by valve leaks or malfunctions
• Supports engine performance by ensuring correct air injection timing
• Prevents damage to the air pump from exhaust gas contamination

Installation Notes and Tips

• Includes all necessary mounting hardware and gasket for a complete installation
• Ensure the valve is installed in the correct orientation to maintain proper air flow
• Inspect the air injection system for leaks or damage before installation
• Follow vehicle manufacturer torque specifications when securing the valve
• Recommended for professional installation or by experienced technicians

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 911-151 Secondary Air Injection Check Valve undergoes rigorous quality control to ensure durability and reliable operation. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.