GMC Yukon alternator — 150 amp (opt KG4) price snapshot
- Low
- $40
- Average
- $133
- High
- $306

Trim-specific price guide
A used GMC Yukon alternator (150 amp (opt KG4)) costs $40 to $306, with a median asking price of $80. Based on 112 priced salvage yard listings across the US, updated Sep 8, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $40–$306 | 75 | |
| Grade BStandard used | $40–$249 | 16 | |
| Grade CVisible wear | $55–$55 | 1 | |
| Grade XUngraded | $65–$100 | 20 |
Median by grade
Median asking price by seller-reported condition grade · $40–$306 overall range
Trim-specific context
This pricing covers the 150 amp (opt KG4) variant of the GMC Yukon alternator, based on 112 priced listings across 3 model years (2018, 2019, 2020). Its $80 median is 47% below the GMC Yukon alternator overall median of $150.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
Other trims
Common questions
Based on 112 priced salvage-yard listings across 3 model years, a used GMC Yukon alternator in the 150 amp (opt KG4) variant lists between $40 and $306, with a median asking price of $80.
The 150 amp (opt KG4) variant appears in model years 2018, 2019, 2020. Prices and availability differ by year.
Yes. Grade A has a median of $100, Grade B has a median of $236, Grade C has a median of $55. Grade A parts are in excellent condition, B is good, and C is fair.