Alternator Brush

Critical For Operation

Charging System

Conducts electrical current to the alternator to generate power.

The brushes transfer electrical current from the alternator’s rotating components to the stationary parts, ensuring the alternator can generate power for the vehicle.

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Typical part cost

$10–$50🔒

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Typical labor cost

$100–$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

5/10

⚠️ Owners Often Notice

If the Alternator Brush is starting to fail, these are the signs owners most commonly report before it gets worse:

Dim lights

Electrical accessories not working

Battery not charging

Vehicle won't start

Battery draining

Alternator noise