2021 Ram 3500 engine computer — Emission Control, (DEF pump module), (mounted on top of urea tank) price snapshot
- Low
- $51
- Average
- $138
- High
- $400
Year & trim-specific price guide
Used 2021 Ram 3500 Engine Computer — Emission Control, (DEF pump module), (mounted on top of urea tank) prices
Trim-specific pricing for the Emission Control, (DEF pump module), (mounted on top of urea tank) variant of the 2021 Ram 3500 engine computer, built from 42 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
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.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 10, 2026AS
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.
Price summary
A used 2021 Ram 3500 engine computer (Emission Control, (DEF pump module), (mounted on top of urea tank)) costs $51 to $400, with a median asking price of $90. Based on 42 priced salvage yard listings across the US, updated Oct 10, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$95
Grade B (good)$90
Grade C (fair)$85
USD
Condition comparison
Price by part grade
Grade AClean / low wear$61–$40016 listings
Grade BStandard used$51–$29017 listings
Grade CVisible wear$85–$852 listings
Grade XUngraded$60–$1207 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $61–$400 | 16 | |
| Grade BStandard used | $51–$290 | 17 | |
| Grade CVisible wear | $85–$85 | 2 | |
| Grade XUngraded | $60–$120 | 7 |
Median by grade
Grade price comparison
Grade A$95
Grade B$90
Grade C$85
Ungraded$81
Median asking price by seller-reported condition grade · $51–$400 overall range
Trim-specific context
How does the Emission Control, (DEF pump module), (mounted on top of urea tank) compare?
This pricing covers the Emission Control, (DEF pump module), (mounted on top of urea tank) variant of the 2021 Ram 3500 engine computer, based on 42 priced listings. Its $90 median is 44% below the 2021 Ram 3500 engine computer overall median of $161.
There are 2 other engine computer variants available for the 2021 Ram 3500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Emission Control, (DEF pump module), (mounted on top of urea tank) in other model years
Same year, other trims
What other 2021 Ram 3500 engine computer variants are available?
Back to full guide
2021 Ram 3500 engine computer — all trims
Common questions
2021 Ram 3500 engine computer (Emission Control, (DEF pump module), (mounted on top of urea tank)) FAQ
How much is a used 2021 Ram 3500 engine computer (Emission Control, (DEF pump module), (mounted on top of urea tank))?
Based on 42 priced salvage-yard listings, a used 2021 Ram 3500 engine computer in the Emission Control, (DEF pump module), (mounted on top of urea tank) variant lists between $51 and $400, with a median asking price of $90.
Which years use the Emission Control, (DEF pump module), (mounted on top of urea tank) engine computer?
The Emission Control, (DEF pump module), (mounted on top of urea tank) variant appears in model years 2019, 2020, 2021, 2022, 2023, 2024, 2025. Prices and availability may differ by year.