Used 2018 GMC Terrain headlight assembly – HID (opt T4F), LH

Year & trim-specific price guide

Used 2018 GMC Terrain Headlight Assembly — HID (opt T4F), LH prices

Trim-specific pricing for the HID (opt T4F), LH variant of the 2018 GMC Terrain headlight assembly, built from 25 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedSep 23, 2026

2018 GMC Terrain · HID (opt T4F), LH

$919

median asking price

25 priced listings · $127–$1,209

Price summary

A used 2018 GMC Terrain headlight assembly (HID (opt T4F), LH) costs $127 to $1,209, with a median asking price of $919. Based on 25 priced salvage yard listings across the US, updated Sep 23, 2026. Prices exclude shipping, core charges, and installation.

2018 GMC Terrain headlight assembly — HID (opt T4F), LH price snapshot

USD
Low
$127
Average
$889
High
$1,209
25 priced listings used · last updated Sep 23, 2026· How we price·

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Reporting price for 2018 GMC Terrain Headlight Assembly (HID (opt T4F), LH)

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Trim-specific context

How does the HID (opt T4F), LH compare?

This pricing covers the HID (opt T4F), LH variant of the 2018 GMC Terrain headlight assembly, based on 25 priced listings. Its $919 median is 0% above the 2018 GMC Terrain headlight assembly overall median of $919.

There are 3 other headlight assembly variants available for the 2018 GMC Terrain.

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

Same trim, other years

HID (opt T4F), LH in other model years

All years
202138 listings$670$185 – $1,140202029 listings$750$475 – $950201945 listings$750$110 – $987

Same year, other trims

What other 2018 GMC Terrain headlight assembly variants are available?

LED (opt T4L), LH

20 listings$959$125 – $1,184

LED (opt T4L), RH

19 listings$1,080$75 – $1,494

HID (opt T4F), RH

12 listings$670$454 – $1,047

Back to full guide

2018 GMC Terrain headlight assembly — all trims

View 2018 guide

Common questions

2018 GMC Terrain headlight assembly (HID (opt T4F), LH) FAQ

How much is a used 2018 GMC Terrain headlight assembly (HID (opt T4F), LH)?

Based on 25 priced salvage-yard listings, a used 2018 GMC Terrain headlight assembly in the HID (opt T4F), LH variant lists between $127 and $1,209, with a median asking price of $919.

Which years use the HID (opt T4F), LH headlight assembly?

The HID (opt T4F), LH variant appears in model years 2018, 2019, 2020, 2021. Prices and availability may differ by year.

2018 GMC Terrain Headlight Assembly · HID (opt T4F), LH Prices | Part Price Guide