The alternator charges your battery and powers your car's electrical system. When it fails, your car will eventually die — but the repair is straightforward and shouldn't break the bank.
Cost Breakdown
| Option | Parts | Total Installed |
|---|
| Remanufactured alternator | $100–$350 | $300–$700 |
| New aftermarket alternator | $150–$400 | $400–$900 |
| New OEM alternator | $250–$600 | $500–$1,200 |
Remanufactured alternators are the best value for most vehicles. They're factory-rebuilt with new bearings, brushes, and diodes, tested to OEM specs, and come with a warranty. The performance difference versus new is negligible.
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QuoteScore compares your alternator quote against retail parts prices from AutoZone, RockAuto, O'Reilly, and more. See the real markup your shop is charging.
How we calculated these numbers
Every price range, median, and benchmark in this guide is computed from real auto repair quotes that QuoteScore users have submitted for analysis, combined with our regional pricing benchmark database.
- Sample size: 803 auto repair quotes analyzed by QuoteScore.
- Benchmark data: 14,000+ regional pricing benchmarks covering parts retail (RockAuto, AutoZone, Advance Auto, Home Depot, Lowe's, Ferguson) and labor rates by metro.
- Pricing date range: Quotes from late 2024 through September 2026; benchmark data for this guide last refreshed September 2026.
- Methodology: Outliers (top/bottom 5%) trimmed before computing medians. Region-specific labor rates separated from parts pricing. We disclose sample size when fewer than 50 quotes back a specific number.
Live database stats: /api/stats/public · Data corrections: quotescoreai@gmail.com
Frequently Asked Questions
How much does it cost to replace an alternator?
Alternator replacement costs $300 to $700 installed with a remanufactured unit, $400 to $900 with a new aftermarket alternator, and $500 to $1,200 for new OEM. The part is $100 to $600 and labor is one to two hours on most vehicles. Across the 803 auto repair quotes QuoteScore has scored, 55.9% scored under 50, meaning at least one line was priced above the normal market range for that repair and region, so ask for the parts and labor split before approving anything.
Can I drive with a bad alternator?
Briefly — your car will run on battery power alone for 30-60 minutes before dying completely. Driving with a failing alternator can also damage your battery, which adds $150-$300 to the repair bill.