A/C Compressor Bypass Pulley

Allows the serpentine belt to run without the A/C compressor.

The bypass pulley allows the engine's serpentine belt to rotate normally without engaging the compressor in case the A/C system is bypassed.

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Typical part cost

$30–$80🔒

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Typical labor cost

$50–$150🔒

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Typically lasts

70,000–150,000 mi

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Or about

4.0–10.0 years

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DIY difficulty

4/10

If the A/C Compressor Bypass Pulley is starting to fail, these are the signs owners most commonly report before it gets worse:

Serpentine belt slipping

Noise from engine

A/C system not functioning

Overheating

Compressor locked

A/C not cooling

Services commonly performed on or around this part.

Replace A/C Compressor Bypass Pulley

No standard interval on file

Inspect A/C Compressor Bypass Pulley

No standard interval on file