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.
OE
OE
GM Genuine Parts Secondary Air Injection Shut-Off and Check Valve
GM Part #12636250
ACDelco Part #12636250
About this product
ACDelco GM Original Equipment Secondary Air Injection Check Valve helps prevent exhaust gases from flowing back through the air injection system, and are GM-recommended replacements for your vehicle's original components. These original equipment secondary air injection check valves have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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- Helps prevent exhaust from entering air pump
- GM-recommended replacement part for your GM vehicle's original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
AdjustableNo
MaterialAluminum, Steel
Port Quantity1
Length9.182677 in / 233.24 mm
ClassificationOE
AdjustableNo
Port Quantity1
ClassificationOE
MaterialAluminum, Steel
Length9.182677 in / 233.24 mm
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.
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.
Frequently Asked Questions
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.