Air Pump Check Valve

Emissions System

Prevents exhaust gases from flowing back into the air pump.

This valve ensures that exhaust gases do not flow back into the air pump, protecting it from damage and ensuring proper operation of the emissions system.

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Typical part cost

$20–$60🔒

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Typical labor cost

$50–$200🔒

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Typically lasts

80,000–150,000 mi

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Or about

4.0–10.0 years

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DIY difficulty

4/10

⚠️ Owners Often Notice

If the Air Pump Check Valve is starting to fail, these are the signs owners most commonly report before it gets worse:

Check engine light

Failed emissions test

Engine stalling

Poor performance

Rough idling

Emission smell