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Alternators & Generators: what should you pay?

What you'll usually pay

$100 typical price

Most are between$70–$295

Brand new$98.77

Used$140

On sale now1,140,416

💡 Used ones cost about 42% more here.

💚 Best value for your money

81 - 100 A 44,064 on sale$91.99 · 8% cheaper

101 - 120 A 51,232 on sale$92.89 · 8% cheaper

121 - 140 A 49,968 on sale$95.99 · 4% cheaper

11 - 15 V 368,714 on sale$95.99 · 4% cheaper

61 - 80 A 27,842 on sale$97.48 · 3% cheaper

Price by brand

Chevrolet

$110+10%

Ford

$110+10%

Honda

$127+26%

ACDelco

$130+29%

DENSO

$196+95%

Bosch

$199+98%

Price by amperage

81 - 100 A

$91.99-8%

101 - 120 A

$92.89-8%

121 - 140 A

$95.99-4%

61 - 80 A

$97.48-3%

141 - 160 A

$97.54-3%

161 - 180 A

$130+29%

Price by brand type

Not Specified

$99.29-1%

Unbranded

$103+3%

Private Label

$103+3%

Genuine OEM

$120+20%

Aftermarket Branded

$146+45%

Price by voltage

11 - 15 V

$95.99-4%

6 - 10 V

$114+13%

16 - 20 V

$115+15%

1 - 5 V

$141+41%

21 - 25 V

$161+60%

26 - 30 V

$199+99%

🛒 Some on sale right now

How we got these numbers

Worked out from 200 live eBay listings (price range $70–$295, odd outliers ignored). These are asking prices, so use them as a guide. Last checked August 12, 2026.