GMC Sierra 1500 water pump — 5.3L, opt L8B, inline (auxiliary) price snapshot
- Low
- $48
- Average
- $58
- High
- $75

Trim-specific price guide
A used GMC Sierra 1500 water pump (5.3L, opt L8B, inline (auxiliary)) costs $48 to $75, with a median asking price of $48. Based on 22 priced salvage yard listings across the US, updated Sep 12, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $48–$75 | 20 | |
| Grade BStandard used | $48–$48 | 2 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Median asking price by seller-reported condition grade · $48–$75 overall range
Trim-specific context
This pricing covers the 5.3L, opt L8B, inline (auxiliary) variant of the GMC Sierra 1500 water pump, based on 22 priced listings across 2 model years (2017, 2018). Its $48 median is 50% below the GMC Sierra 1500 water pump overall median of $96.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
Other trims
Common questions
Based on 22 priced salvage-yard listings across 2 model years, a used GMC Sierra 1500 water pump in the 5.3L, opt L8B, inline (auxiliary) variant lists between $48 and $75, with a median asking price of $48.
The 5.3L, opt L8B, inline (auxiliary) variant appears in model years 2017, 2018. Prices and availability differ by year.
Yes. Grade A has a median of $48, Grade B has a median of $48. Grade A parts are in excellent condition, B is good, and C is fair.