2018 GMC Sierra 1500 engine — 5.3L, opt L8B (VIN R, 8th digit) price snapshot
- Low
- $950
- Average
- $2,352
- High
- $3,300

Year & trim-specific price guide
A used 2018 GMC Sierra 1500 engine (5.3L, opt L8B (VIN R, 8th digit)) costs $950 to $3,300, with a median asking price of $2,350. Based on 44 priced salvage yard listings across the US, updated Aug 18, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $1,856–$2,986 | 29 | |
| Grade BStandard used | $1,713–$2,796 | 9 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $950–$3,300 | 6 |
Median by grade
Median asking price by seller-reported condition grade · $950–$3,300 overall range
Trim-specific context
This pricing covers the 5.3L, opt L8B (VIN R, 8th digit) variant of the 2018 GMC Sierra 1500 engine, based on 44 priced listings. Its $2,350 median is 29% below the 2018 GMC Sierra 1500 engine overall median of $3,300.
There are 3 other engine variants available for the 2018 GMC Sierra 1500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
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Common questions
Based on 44 priced salvage-yard listings, a used 2018 GMC Sierra 1500 engine in the 5.3L, opt L8B (VIN R, 8th digit) variant lists between $950 and $3,300, with a median asking price of $2,350.
In our current dataset, the 5.3L, opt L8B (VIN R, 8th digit) variant appears only for the 2018 model year.