Used 2018 Buick Regal headlight assembly – halogen (opt T4A), LH

Year & trim-specific price guide

Used 2018 Buick Regal Headlight Assembly — halogen (opt T4A), LH prices

Trim-specific pricing for the halogen (opt T4A), LH variant of the 2018 Buick Regal headlight assembly, built from 45 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 6, 2026

2018 Buick Regal · halogen (opt T4A), LH

$400

median asking price

45 priced listings · $200–$588

Price summary

A used 2018 Buick Regal headlight assembly (halogen (opt T4A), LH) costs $200 to $588, with a median asking price of $400. Based on 45 priced salvage yard listings across the US, updated Oct 6, 2026. Prices exclude shipping, core charges, and installation.

2018 Buick Regal headlight assembly — halogen (opt T4A), LH price snapshot

USD
Low
$200
Average
$400
High
$588
45 priced listings used · last updated Oct 6, 2026· How we price·

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Reporting price for 2018 Buick Regal Headlight Assembly (halogen (opt T4A), LH)

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Trim-specific context

How does the halogen (opt T4A), LH compare?

This pricing covers the halogen (opt T4A), LH variant of the 2018 Buick Regal headlight assembly, based on 45 priced listings. Its $400 median is 38% below the 2018 Buick Regal headlight assembly overall median of $643.

There are 3 other headlight assembly 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

halogen (opt T4A), LH in other model years

All years
202043 listings$400$139 – $650201944 listings$400$200 – $65020178 listings$449$180 – $616201642 listings$255$108 – $602201512 listings$540$108 – $602

Same year, other trims

What other 2018 Buick Regal headlight assembly variants are available?

LED (opt T4L), LH

47 listings$910$230 – $1,181

LED (opt T4L), RH

46 listings$800$150 – $1,020

halogen (opt T4A), RH

44 listings$400$139 – $760

Back to full guide

2018 Buick Regal headlight assembly — all trims

View 2018 guide

Common questions

2018 Buick Regal headlight assembly (halogen (opt T4A), LH) FAQ

How much is a used 2018 Buick Regal headlight assembly (halogen (opt T4A), LH)?

Based on 45 priced salvage-yard listings, a used 2018 Buick Regal headlight assembly in the halogen (opt T4A), LH variant lists between $200 and $588, with a median asking price of $400.

Which years use the halogen (opt T4A), LH headlight assembly?

The halogen (opt T4A), LH variant appears in model years 2015, 2016, 2017, 2018, 2019, 2020. Prices and availability may differ by year.

2018 Buick Regal Headlight Assembly · halogen (opt T4A), LH Prices | Part Price Guide