Feature

●Customers are advised to compare the OE Number we list with those of yours. Interchange Part OE Number: 12619076, 214-2146, 12594394, 2402-484337, DV138, EC1342.
●Tested quality for better performance in compatible car models: 2006-2008 Chevrolet Cobalt w/ 2.2L; 2006-2008 Pontiac G5 w/ 2.2L; 2006-2007 Saturn ION w/ 2.2L
●Importance: An air inject check valves primary function is to prevent exhaust gas from finding their way into the air pump system. If it becomes defective, it can cause significant damage to your air pump system and other parts of the engine.
●All of our parts undergo strict quality tests and are manufactured for better performance. These steps are a quality control for the parts to work for a long time.
●Installation under professional instruction is recommended. If you have any questions, feel free to contact us, and we will reply you as soon as possible.

Description

About Air Injection Check Valve

Not all vehicles have an AIR system, but those that do use the technology to reduce tailpipe emissions. Depending on the vehicle, the AIR system may supply air to the exhaust manifolds, the catalytic converter, or both at different times. The additional air helps reduce harmful exhaust gases through oxidation. And the catalytic converter warms up more quickly when air is added to the exhaust manifolds.

A typical AIR system include:

Air pump (either electric or engine-driven): Supplies air to the AIR system.
Air management solenoids & valves: Direct air to the check valves and the exhaust manifolds or catalytic converter. There may also be valves that direct air to the atmosphere.
Check valves: Prevent hot exhaust gases from backing up into the AIR system.
Necessary plumbing (i.e., hoses & pipes): Connect the various parts of the AIR system.
Powertrain control module (PCM): Controls the air management solenoids and monitors the operation of the AIR system.

Usually, when the engine is cold, the PCM commands the air management solenoids to direct airflow to the exhaust manifolds. Once the engine warms up, the module commands the solenoids to direct airflow to the catalytic converter. Note: There are also some systems that direct airflow exclusively to the exhaust manifolds.

As for the check valves, they typically operate in response to airflow and exhaust backpressure. Airflow from the AIR system will cause a check valve to open, whereas extreme exhaust backpressure (from a backfire, etc.) will force a valve to close.

Depending on the system design, there may be just one check valve or multiple check valves. Some check valves are exclusively passive devices, while others are operated by the PCM under certain conditions.

What are the Symptoms of a Bad Air Pump Check Valve?

Illuminated Check Engine Light

Your car’s primary computer, which is often referred to as the powertrain control module (PCM), monitors the operation of the AIR system. If the module detects a problem due to a faulty check valve, it will turn on the check engine light and store a diagnostic trouble code (DTC) in its memory. Common air injection-related DTCs include P0410, P0411, all through P0419.

Increased Tailpipe Emissions

The primary goal of the AIR system is to reduce tailpipe emissions. A faulty AIR check valve can block the flow of air into the exhaust stream, hindering the AIR system’s performance and causing vehicle emissions to increase.

Damage to Other Parts of the AIR System

The AIR check valve prevents reverse exhaust flow from entering the AIR system. If the check valve fails, hot exhaust gases can sneak back into the system, damaging components, such as the air pump and air management valves.

About Air Injection Check Valve

What are the Symptoms of a Bad Air Pump Check Valve?

Customers are advised to verify the compatibility:

Vehicle Fitment:

Reference OE Number:

Product information