Used 2018 Acura RDX alternator – 3.6L, 155 amp (opt KW8)

Year & trim-specific price guide

Used 2018 Acura RDX Alternator — 3.6L, 155 amp (opt KW8) prices

Trim-specific pricing for the 3.6L, 155 amp (opt KW8) variant of the 2018 Acura RDX alternator, built from 48 real salvage yard listings with condition grade detail.

2018 Acura RDX · 3.6L, 155 amp (opt KW8)

$135

median asking price

48 priced listings · $35–$237

Price summary

A used 2018 Acura RDX alternator (3.6L, 155 amp (opt KW8)) costs $35 to $237, with a median asking price of $135. Based on 48 priced salvage yard listings across the US, updated Sep 11, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$135
Grade B (good)$216

2018 Acura RDX alternator — 3.6L, 155 amp (opt KW8) price snapshot

USD
Low
$35
Average
$137
High
$237
48 priced listings used · last updated Sep 11, 2026· How we price·

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Reporting price for 2018 Acura RDX Alternator (3.6L, 155 amp (opt KW8))

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$75–$23734 listings
Grade BStandard used$85–$22810 listings
Grade CVisible wearUpdating
Grade XUngraded$35–$754 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $35–$237 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 2018 Acura RDX alternator, based on 48 priced listings. Its $135 median is 45% above the 2018 Acura RDX alternator overall median of $93.

There are 2 other alternator variants available for the 2018 Acura RDX.

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

Same year, other trims

What other 2018 Acura RDX alternator variants are available?

3.6L, 170 amp (opt KW7)

45 listings$110$56 – $272

2.5L

44 listings$85$46 – $271

Back to full guide

2018 Acura RDX alternator — all trims

View 2018 guide

Common questions

2018 Acura RDX alternator (3.6L, 155 amp (opt KW8)) FAQ

How much is a used 2018 Acura RDX alternator (3.6L, 155 amp (opt KW8))?

Based on 48 priced salvage-yard listings, a used 2018 Acura RDX alternator in the 3.6L, 155 amp (opt KW8) variant lists between $35 and $237, with a median asking price of $135.

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

In our current dataset, the 3.6L, 155 amp (opt KW8) variant appears only for the 2018 model year.