2021 GMC Yukon alternator — 3.0L, 220 amp (opt KW5) price snapshot
- Low
- $65
- Average
- $144
- High
- $250

Year & trim-specific price guide
A used 2021 GMC Yukon alternator (3.0L, 220 amp (opt KW5)) costs $65 to $250, with a median asking price of $141. Based on 50 priced salvage yard listings across the US, updated Aug 17, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $75–$250 | 23 | |
| Grade BStandard used | $65–$235 | 26 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $65–$65 | 1 |
Median by grade
Median asking price by seller-reported condition grade · $65–$250 overall range
Trim-specific context
This pricing covers the 3.0L, 220 amp (opt KW5) variant of the 2021 GMC Yukon alternator, based on 50 priced listings. Its $141 median is 6% below the 2021 GMC Yukon alternator overall median of $150.
There are 3 other alternator variants available for the 2021 GMC Yukon.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Same year, other trims
Back to full guide
Common questions
Based on 50 priced salvage-yard listings, a used 2021 GMC Yukon alternator in the 3.0L, 220 amp (opt KW5) variant lists between $65 and $250, with a median asking price of $141.
The 3.0L, 220 amp (opt KW5) variant appears in model years 2021, 2022, 2025. Prices and availability may differ by year.