2018 Cadillac CTS alternator — 3.6L, VIN S (8th digit, opt LGX) price snapshot
- Low
- $50
- Average
- $111
- High
- $161
Year & trim-specific price guide
Used 2018 Cadillac CTS Alternator — 3.6L, VIN S (8th digit, opt LGX) prices
Trim-specific pricing for the 3.6L, VIN S (8th digit, opt LGX) variant of the 2018 Cadillac CTS alternator, built from 8 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 9, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price summary
A used 2018 Cadillac CTS alternator (3.6L, VIN S (8th digit, opt LGX)) costs $50 to $161, with a median asking price of $161. Based on 8 priced salvage yard listings across the US, updated Oct 9, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$65
Grade B (good)$161
USD
Condition comparison
Price by part grade
Grade AClean / low wear$50–$1617 listings
Grade BStandard used$161–$1611 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$161 | 7 | |
| Grade BStandard used | $161–$161 | 1 |
Median by grade
Grade price comparison
Grade A$65
Grade B$161
Median asking price by seller-reported condition grade · $50–$161 overall range
Trim-specific context
How does the 3.6L, VIN S (8th digit, opt LGX) compare?
This pricing covers the 3.6L, VIN S (8th digit, opt LGX) variant of the 2018 Cadillac CTS alternator, based on 8 priced listings. Its $161 median is 11% above the 2018 Cadillac CTS alternator overall median of $145.
There are 4 other alternator variants available for the 2018 Cadillac CTS.
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, VIN S (8th digit, opt LGX) in other model years
Same year, other trims
What other 2018 Cadillac CTS alternator variants are available?
3.6L, VIN 8 (8th digit, opt LF3, twin turbo)
32 listings$184$75 – $3256.2L (supercharged)
13 listings$106$65 – $3052.0L, automatic engine stop and start (opt KL9)
6 listings$161$75 – $2012.0L, w/o automatic engine stop and start
4 listings$85$61 – $120Back to full guide
2018 Cadillac CTS alternator — all trims
Common questions
2018 Cadillac CTS alternator (3.6L, VIN S (8th digit, opt LGX)) FAQ
How much is a used 2018 Cadillac CTS alternator (3.6L, VIN S (8th digit, opt LGX))?
Based on 8 priced salvage-yard listings, a used 2018 Cadillac CTS alternator in the 3.6L, VIN S (8th digit, opt LGX) variant lists between $50 and $161, with a median asking price of $161.
Which years use the 3.6L, VIN S (8th digit, opt LGX) alternator?
The 3.6L, VIN S (8th digit, opt LGX) variant appears in model years 2016, 2017, 2018, 2019. Prices and availability may differ by year.