Used 2018 Chevy Tahoe alternator – 150 amp (opt KG4)

Year & trim-specific price guide

Used 2018 Chevy Tahoe Alternator — 150 amp (opt KG4) prices

Trim-specific pricing for the 150 amp (opt KG4) variant of the 2018 Chevy Tahoe alternator, built from 37 real salvage yard listings with condition grade detail.

2018 Chevy Tahoe · 150 amp (opt KG4)

$80

median asking price

37 priced listings · $40–$300

Price summary

A used 2018 Chevy Tahoe alternator (150 amp (opt KG4)) costs $40 to $300, with a median asking price of $80. Based on 37 priced salvage yard listings across the US, updated Aug 14, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$100
Grade B (good)$236

2018 Chevy Tahoe alternator — 150 amp (opt KG4) price snapshot

USD
Low
$40
Average
$132
High
$300
37 priced listings used · last updated Aug 14, 2026· How we price·

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Reporting price for 2018 Chevy Tahoe Alternator (150 amp (opt KG4))

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$40–$30024 listings
Grade BStandard used$40–$2367 listings
Grade CVisible wearUpdating
Grade XUngraded$75–$806 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $40–$300 overall range

Trim-specific context

How does the 150 amp (opt KG4) compare?

This pricing covers the 150 amp (opt KG4) variant of the 2018 Chevy Tahoe alternator, based on 37 priced listings. Its $80 median is 11% below the 2018 Chevy Tahoe alternator overall median of $90.

There is 1 other alternator variant available for the 2018 Chevy Tahoe.

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

Same trim, other years

150 amp (opt KG4) in other model years

All years
202048 listings$162$55 – $249201917 listings$205$85 – $205

Same year, other trims

What other 2018 Chevy Tahoe alternator variants are available?

170 amp (opt KW7)

35 listings$90$40 – $193

Back to full guide

2018 Chevy Tahoe alternator — all trims

View 2018 guide

Common questions

2018 Chevy Tahoe alternator (150 amp (opt KG4)) FAQ

How much is a used 2018 Chevy Tahoe alternator (150 amp (opt KG4))?

Based on 37 priced salvage-yard listings, a used 2018 Chevy Tahoe alternator in the 150 amp (opt KG4) variant lists between $40 and $300, with a median asking price of $80.

Which years use the 150 amp (opt KG4) alternator?

The 150 amp (opt KG4) variant appears in model years 2018, 2019, 2020. Prices and availability may differ by year.