Used 2020 GMC Acadia alternator – 3.6L, 155 amp (opt KW8)

Year & trim-specific price guide

Used 2020 GMC Acadia Alternator — 3.6L, 155 amp (opt KW8) prices

Trim-specific pricing for the 3.6L, 155 amp (opt KW8) variant of the 2020 GMC Acadia alternator, built from 42 real salvage yard listings with condition grade detail.

2020 GMC Acadia · 3.6L, 155 amp (opt KW8)

$80

median asking price

42 priced listings · $50–$310

Price summary

A used 2020 GMC Acadia alternator (3.6L, 155 amp (opt KW8)) costs $50 to $310, with a median asking price of $80. Based on 42 priced salvage yard listings across the US, updated Sep 12, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$82
Grade B (good)$79

2020 GMC Acadia alternator — 3.6L, 155 amp (opt KW8) price snapshot

USD
Low
$50
Average
$103
High
$310
42 priced listings used · last updated Sep 12, 2026· How we price·

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Reporting price for 2020 GMC Acadia Alternator (3.6L, 155 amp (opt KW8))

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$50–$31026 listings
Grade BStandard used$55–$31012 listings
Grade CVisible wearUpdating
Grade XUngraded$55–$804 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $50–$310 overall range

Trim-specific context

How does the 3.6L, 155 amp (opt KW8) compare?

This pricing covers the 3.6L, 155 amp (opt KW8) variant of the 2020 GMC Acadia alternator, based on 42 priced listings. Its $80 median is 11% below the 2020 GMC Acadia alternator overall median of $90.

There are 3 other alternator variants available for the 2020 GMC Acadia.

Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.

Same trim, other years

3.6L, 155 amp (opt KW8) in other model years

All years
201948 listings$135$35 – $237

Same year, other trims

What other 2020 GMC Acadia alternator variants are available?

3.6L, 170 amp (opt KW7)

49 listings$86$40 – $310

2.0L

47 listings$138$75 – $236

2.5L

44 listings$89$40 – $221

Back to full guide

2020 GMC Acadia alternator — all trims

View 2020 guide

Common questions

2020 GMC Acadia alternator (3.6L, 155 amp (opt KW8)) FAQ

How much is a used 2020 GMC Acadia alternator (3.6L, 155 amp (opt KW8))?

Based on 42 priced salvage-yard listings, a used 2020 GMC Acadia alternator in the 3.6L, 155 amp (opt KW8) variant lists between $50 and $310, with a median asking price of $80.

Which years use the 3.6L, 155 amp (opt KW8) alternator?

The 3.6L, 155 amp (opt KW8) variant appears in model years 2019, 2020. Prices and availability may differ by year.