AutoZone Product & HowTo Info | | air pump check valve

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    Air Pump Check Valve

    Air Pump Check Valve Operation:

    A one-way valve that lets air flow from the air pump to the exhaust system. It's usually located in-line between the diverter valve and the air injection reactor (AIR) pipes in the cylinder head/exhaust manifold ports. It keeps exhaust gases from entering the air injection system.

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