Year & trim-specific price guide

Used 2018 Buick Regal Engine — 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 Buick Regal engine, built from 41 real salvage yard listings with condition grade detail.

SKWritten bySaurabh Kumar · Co-Founder & CTO

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.

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ASReviewed byAmbika Sharma · Co-Founder & COO

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.

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Last updatedOct 12, 2026

2018 Buick Regal · 3.6L (VIN S, 8th digit, opt LGX)

$1,825

median asking price

41 priced listings · $1,200–$2,637

Price summary

A used 2018 Buick Regal engine (3.6L (VIN S, 8th digit, opt LGX)) costs $1,200 to $2,637, with a median asking price of $1,825. Based on 41 priced salvage yard listings across the US, updated Oct 12, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$1,835

Grade B (good)$1,500

2018 Buick Regal engine — 3.6L (VIN S, 8th digit, opt LGX) price snapshot

USD

Low: $1,200
Average: $1,878
High: $2,637

41 priced listings used · last updated Oct 12, 2026· How we price·

Condition comparison

Price by part grade

Grade AClean / low wear$1,300–$2,63738 listings

Grade BStandard used$1,200–$1,5002 listings

Grade XUngraded$2,200–$2,2001 listings

Grade	Price range	Listings
Grade AClean / low wear	$1,300–$2,637	38
Grade BStandard used	$1,200–$1,500	2
Grade XUngraded	$2,200–$2,200	1

Median by grade

Grade price comparison

Grade A$1,835

Grade B$1,500

Ungraded$2,200

Median asking price by seller-reported condition grade · $1,200–$2,637 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 Buick Regal engine, based on 41 priced listings. Its $1,825 median is 46% above the 2018 Buick Regal engine overall median of $1,250.

There are 2 other engine variants available for the 2018 Buick Regal.

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

All years

202041 listings$1,825$1,200 – $2,637 201910 listings$2,200$1,200 – $2,637

Same year, other trims

What other 2018 Buick Regal engine variants are available?

2.0L (VIN X, 8th digit, opt LTG), AWD

37 listings$890$625 – $1,702

2.0L (VIN X, 8th digit, opt LTG), FWD

37 listings$1,125$725 – $1,832

Back to full guide

2018 Buick Regal engine — all trims

View 2018 guide

Common questions

2018 Buick Regal engine (3.6L (VIN S, 8th digit, opt LGX)) FAQ

How much is a used 2018 Buick Regal engine (3.6L (VIN S, 8th digit, opt LGX))?

Based on 41 priced salvage-yard listings, a used 2018 Buick Regal engine in the 3.6L (VIN S, 8th digit, opt LGX) variant lists between $1,200 and $2,637, with a median asking price of $1,825.

Which years use the 3.6L (VIN S, 8th digit, opt LGX) engine?

The 3.6L (VIN S, 8th digit, opt LGX) variant appears in model years 2018, 2019, 2020. Prices and availability may differ by year.