Used 2018 GMC Yukon alternator – 170 amp (opt KW7)

Year & trim-specific price guide

Used 2018 GMC Yukon Alternator — 170 amp (opt KW7) prices

Trim-specific pricing for the 170 amp (opt KW7) variant of the 2018 GMC Yukon alternator, built from 34 real salvage yard listings with condition grade detail.

2018 GMC Yukon · 170 amp (opt KW7)

$90

median asking price

34 priced listings · $40–$193

Price summary

A used 2018 GMC Yukon alternator (170 amp (opt KW7)) costs $40 to $193, with a median asking price of $90. Based on 34 priced salvage yard listings across the US, updated Aug 17, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$76
Grade B (good)$110

2018 GMC Yukon alternator — 170 amp (opt KW7) price snapshot

USD
Low
$40
Average
$105
High
$193
34 priced listings used · last updated Aug 17, 2026· How we price·

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Reporting price for 2018 GMC Yukon Alternator (170 amp (opt KW7))

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$40–$16618 listings
Grade BStandard used$56–$19313 listings
Grade CVisible wearUpdating
Grade XUngraded$60–$1503 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $40–$193 overall range

Trim-specific context

How does the 170 amp (opt KW7) compare?

This pricing covers the 170 amp (opt KW7) variant of the 2018 GMC Yukon alternator, based on 34 priced listings. Its $90 median is 0% above the 2018 GMC Yukon alternator overall median of $90.

There is 1 other alternator variant available for the 2018 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

170 amp (opt KW7) in other model years

All years
202030 listings$93$40 – $278201949 listings$135$45 – $268

Same year, other trims

What other 2018 GMC Yukon alternator variants are available?

150 amp (opt KG4)

37 listings$80$40 – $306

Back to full guide

2018 GMC Yukon alternator — all trims

View 2018 guide

Common questions

2018 GMC Yukon alternator (170 amp (opt KW7)) FAQ

How much is a used 2018 GMC Yukon alternator (170 amp (opt KW7))?

Based on 34 priced salvage-yard listings, a used 2018 GMC Yukon alternator in the 170 amp (opt KW7) variant lists between $40 and $193, with a median asking price of $90.

Which years use the 170 amp (opt KW7) alternator?

The 170 amp (opt KW7) variant appears in model years 2018, 2019, 2020. Prices and availability may differ by year.