How much does alternator replacement cost?

Typically $400–$900 at a US independent shop — about $200–$600 in parts and $120–$300 in labor for a mainstream vehicle. Your exact cost depends on your year, make, model, and engine. The free AI Mechanic gives a vehicle-specific estimate.

What makes alternator replacement cheaper or more expensive?

New vs remanufactured alternator; Engine access (some sit low/behind accessories); Serpentine belt condition (often replaced together).

Alternator replacement cost

A alternator replacement typically costs $400–$900 at a US independent shop for a mainstream vehicle — but your exact cost depends on your year, make, model, and engine.

Parts: $200–$600
Labor: $120–$300
Total: $400–$900

A failing alternator shows up as dimming lights, a battery/charging warning, or a no-start after the battery drains. Before replacing it, a quick charging-system test rules out a simply worn battery — the cheaper culprit.

What affects the price

New vs remanufactured alternator
Engine access (some sit low/behind accessories)
Serpentine belt condition (often replaced together)

DIY vs. shop

Intermediate DIY on most vehicles (~2 hrs) saving $120–300 in labor.

Free · your exact vehicle

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Ranges like this are a starting point. Tell the AI Mechanic your year, make, model, and the symptom or OBD2 code — it estimates the cost for your exact vehicle, flags the likely cheap fix before the expensive one, and tells you when a shop is genuinely the right call.

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More repair costs

catalytic converter $900–$2,500 brake pads $150–$350 brake rotors $300–$600 timing belt $500–$1,000 spark plugs $150–$400 oxygen sensor $150–$350