Autotecnica GM0318822 Secondary Air Injection Check Valve

Secondary Air Injection Check Valve Overview

Autotecnica GM0318822 is a secondary air injection check valve built for emission control service on select Chevrolet Colorado, GMC Canyon, Hummer H3, and Hummer H3T applications. It uses an aluminum body with a 2-port layout and fixed mounting dimensions to support OE-style replacement needs.

Compatible With 2007-2012 Chevrolet Colorado, 2007-2012 GMC Canyon, 2007-2010 Hummer H3, and 2009-2010 Hummer H3T. This Autotecnica GM0318822 check valve is a direct-fit option for owners and technicians replacing a worn or failed air injection valve.

Key Features

• Secondary air injection check valve for emission control repair
• Aluminum construction for durability in underhood conditions
• 2-port design for the specified air injection system layout
• Fixed, non-adjustable design for straightforward replacement
• Mounting hole diameter: 9 mm
• Length: 120 mm

Detailed Description

Autotecnica GM0318822 is engineered as an OE-style replacement secondary air injection check valve for vehicles that rely on the air injection system to manage cold-start emissions. The aluminum housing helps provide a stable, corrosion-resistant structure, while the 2-port configuration and 120 mm length match the listed application requirements. For buyers searching for a secondary air injection check valve for 2007-2012 Chevrolet Colorado or 2007-2012 GMC Canyon, this part number offers a focused replacement solution. It also applies to 2007-2010 Hummer H3 and 2009-2010 Hummer H3T models listed in the fitment data. This part cross-references Dorman OE Solutions 911-151 for the same application.

Common Issues This Part May Address

• Check valve leakage in the secondary air injection system
• Emission-related fault codes tied to air injection flow
• Reduced cold-start emissions system performance
• Failed valve sealing that allows reverse flow in the system
• Replacement needs after corrosion or internal wear

Installation Notes and Tips

Verify the mounting hole diameter, port count, and overall length against the removed component before installation. Confirm the vehicle application by year and model, especially on Chevrolet Colorado, GMC Canyon, Hummer H3, and Hummer H3T platforms. Inspect connected hoses, fittings, and adjacent air injection components for wear or contamination before installing the new valve. Use the vehicle service information for torque and routing specifications.

Quality Assurance

Autotecnica manufactures aftermarket parts under ISO/TS 16949 quality management system specifications and positions this component as an OE-specification replacement choice for DIY and professional repair work. Part number GM0318822 is backed by a two-year, unlimited mileage warranty.