Good Maintenance Practices:
- Replace check valve if it is not operating properly.
- Use approved octane fuel for your vehicle.
- Regularly inspect the air injection system for leaks or damage.
GM Genuine Parts Secondary Air Injection Check Valves are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These valves help prevent exhaust gases from flowing back through the air injection system. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)
Please visit our warranty page on Gmparts.com for full warranty details.
Yes. The valve prevents exhaust from entering the pump. A faulty valve could allow exhaust to enter the pump, potentially causing damage to the pump and other components.
Yes. The one-way check valve can wear or fail, allowing water (which occurs naturally in the exhaust) back into the pump.
GM Genuine Parts Secondary Air Injection Check Valves are designed, engineered, and tested to rigorous standards, and are backed by General Motors.
Pack of 1
GM Part #12639990
ACDelco Part #12639990
GM Part #12639990
ACDelco Part #12639990