2020 GMC Yukon alternator — 170 amp (opt KW7) price snapshot
- Low
- $40
- Average
- $116
- High
- $278

Year & trim-specific price guide
A used 2020 GMC Yukon alternator (170 amp (opt KW7)) costs $40 to $278, with a median asking price of $93. Based on 30 priced salvage yard listings across the US, updated Aug 3, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $40–$166 | 15 | |
| Grade BStandard used | $56–$278 | 12 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $40–$150 | 3 |
Median by grade
Median asking price by seller-reported condition grade · $40–$278 overall range
Trim-specific context
This pricing covers the 170 amp (opt KW7) variant of the 2020 GMC Yukon alternator, based on 30 priced listings. Its $93 median is 9% above the 2020 GMC Yukon alternator overall median of $85.
There is 1 other alternator variant available for the 2020 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 30 priced salvage-yard listings, a used 2020 GMC Yukon alternator in the 170 amp (opt KW7) variant lists between $40 and $278, with a median asking price of $93.
The 170 amp (opt KW7) variant appears in model years 2018, 2019, 2020. Prices and availability may differ by year.