2018 Ford Mustang engine computer — Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA price snapshot
- Low
- $80
- Average
- $218
- High
- $494
Year & trim-specific price guide
Used 2018 Ford Mustang Engine Computer — Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA prices
Trim-specific pricing for the Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA variant of the 2018 Ford Mustang engine computer, built from 34 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 updatedAug 30, 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 2018 Ford Mustang engine computer (Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA) costs $80 to $494, with a median asking price of $186. Based on 34 priced salvage yard listings across the US, updated Aug 30, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$178
Grade B (good)$218
Grade C (fair)$80
USD
Condition comparison
Price by part grade
Grade AClean / low wear$85–$49422 listings
Grade BStandard used$115–$39510 listings
Grade CVisible wear$80–$801 listings
Grade XUngraded$150–$1501 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $85–$494 | 22 | |
| Grade BStandard used | $115–$395 | 10 | |
| Grade CVisible wear | $80–$80 | 1 | |
| Grade XUngraded | $150–$150 | 1 |
Median by grade
Grade price comparison
Grade A$178
Grade B$218
Grade C$80
Ungraded$150
Median asking price by seller-reported condition grade · $80–$494 overall range
Trim-specific context
How does the Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA compare?
This pricing covers the Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA variant of the 2018 Ford Mustang engine computer, based on 34 priced listings. Its $186 median is 23% above the 2018 Ford Mustang engine computer overall median of $151.
There are 6 other engine computer variants available for the 2018 Ford Mustang.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA in other model years
Same year, other trims
What other 2018 Ford Mustang engine computer variants are available?
Electronic Control Module, Shelby GT350, ID FR3A-12B684-DRA
48 listings$197$70 – $405Electronic Control Module, EcoBoost, MT
45 listings$120$50 – $284Electronic Control Module, GT, MT
45 listings$256$116 – $418Electronic Control Module, EcoBoost, AT, ID JR3A-12A650-NA
44 listings$121$50 – $218Electronic Control Module, EcoBoost, AT, ID RMFR3A-12A650-EA
41 listings$100$51 – $331Electronic Control Module, GT, AT
37 listings$150$70 – $325Back to full guide
2018 Ford Mustang engine computer — all trims
Common questions
2018 Ford Mustang engine computer (Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA) FAQ
How much is a used 2018 Ford Mustang engine computer (Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA)?
Based on 34 priced salvage-yard listings, a used 2018 Ford Mustang engine computer in the Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA variant lists between $80 and $494, with a median asking price of $186.
Which years use the Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA engine computer?
The Electronic Control Module, Shelby GT350, ID FR3A-12B684-EUA variant appears in model years 2016, 2017, 2018, 2019, 2020. Prices and availability may differ by year.