Acura ILX engine computer — Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 price snapshot
- Low
- $45
- Average
- $152
- High
- $500
Trim-specific price guide
Acura ILX Engine Computer — Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 prices
Pricing for the Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 variant of the Acura ILX engine computer, aggregated from 84 salvage yard listings across 2 model years.
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 15, 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 Acura ILX engine computer (Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42) costs $45 to $500, with a median asking price of $146. Based on 84 priced salvage yard listings across the US, updated Oct 15, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$146
Grade B (good)$146
USD
Condition comparison
Price by part grade
Grade AClean / low wear$45–$50066 listings
Grade BStandard used$50–$19612 listings
Grade XUngraded$74–$1016 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $45–$500 | 66 | |
| Grade BStandard used | $50–$196 | 12 | |
| Grade XUngraded | $74–$101 | 6 |
Median by grade
Grade price comparison
Grade A$146
Grade B$146
Ungraded$75
Median asking price by seller-reported condition grade · $45–$500 overall range
Trim-specific context
How is the Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 priced differently?
This pricing covers the Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 variant of the Acura ILX engine computer, based on 84 priced listings across 2 model years (2021, 2022). Its $146 median is 6% above the Acura ILX engine computer overall median of $138.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
What does a Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 cost by year?
Other trims
Other Acura ILX engine computer variants
Electronic Control Module, (Acura Watch Plus), ID 37820R4HA74
2 yrs$146$45 – $242Electronic Control Module, (Acura Watch Plus), ID 37820R4HA84
2 yrs$160$59 – $395Electronic Control Module, (Acura Watch Plus), ID 37820R4HC52
2 yrs$204$89 – $271Electronic Control Module, (Acura Watch Plus), ID 37820R4HC71
1 yr$156$40 – $295Electronic Control Module, (Acura Watch Plus), ID 37820R4HC81
1 yr$254$100 – $370Electronic Control Module, Base, pre-crash system
1 yr$225$85 – $300Electronic Control Module, Base, w/o pre-crash system
1 yr$99$40 – $285Electronic Control Module, Canada market, 2.0L
1 yr$120$42 – $239Electronic Control Module, Canada market, 2.4L (MT)
1 yr$155$42 – $280Common questions
Acura ILX engine computer (Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42) FAQ
How much is a used Acura ILX engine computer (Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42)?
Based on 84 priced salvage-yard listings across 2 model years, a used Acura ILX engine computer in the Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 variant lists between $45 and $500, with a median asking price of $146.
Which Acura ILX years use the Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 engine computer?
The Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 variant appears in model years 2021, 2022. Prices and availability differ by year.
Is there a price difference between Electronic Control Module, (Acura Watch Plus), ID 37820R4HC42 condition grades?
Yes. Grade A has a median of $146, Grade B has a median of $146. Grade A parts are in excellent condition, B is good, and C is fair.