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Don't take chances with old, questionable, or faulty catalytic converter check valves that can cripple your vehicle's emissions system. Standard Motor Products replacement converter check valves are designed to exceed OEM specifications for dependable, maintenance-free operation. Trust your vehicle's electrical system needs to Standard Motor Performance.
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$21.99
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ACDelco Gold secondary air injection pump check valves are high-quality aftermarket replacement components for your emission system. These premium steel check valves are manufactured to meet or exceed your expectations for fit and performance. They're available for countless vehicle applications from the 1960s and up
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$21.99
Crown Automotive exhaust check valves prevent exhaust from forcing its way back through the air injection system, which would damage the pump and other components. If your original parts are bad, they will be unable to sense the increase in the intake manifold vacuum and may cause damage to the cylinder head, pistons, and cylinder bores.
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$27.99
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