Find quality Subaru Legacy engine computer (also known as ECU, ECM, PCM) parts at unbeatable prices. Save 50-70% compared to dealership prices.
Start by selecting your vehicle year
Year
Make
Model
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Find quality Subaru Legacy engine computer (also known as ECU, ECM, PCM) parts at unbeatable prices. Save 50-70% compared to dealership prices.
SSL Secured · Your privacy matters · Read our privacy policy
Start by selecting your vehicle year
Year
Make
Model
Enter your year, make, model, and the part you need.
Browse results from thousands of sellers. Compare prices and conditions.
Click to view the listing or contact the seller directly.
Purchase from the seller with confidence. Save 50-70% on parts.
Need a Engine Computer Subaru Legacy? Car Parts Finder USA searches thousands of sellers to find the best engine computer at the lowest prices with guaranteed fitment.

Select your model year to find engine computer parts with exact fitment for your vehicle.
Showing all 34 years available.
Prices vary by model year — newer vehicles typically cost more. Click any year to search current listings.
2025 Subaru Legacy
$100–$400 used
2024 Subaru Legacy
$100–$400 used
2023 Subaru Legacy
$100–$400 used
2022 Subaru Legacy
$85–$340 used
2021 Subaru Legacy
$85–$340 used
2020 Subaru Legacy
$85–$340 used
2019 Subaru Legacy
$85–$340 used
2018 Subaru Legacy
$70–$280 used
2017 Subaru Legacy
$70–$280 used
2016 Subaru Legacy
$70–$280 used
2015 Subaru Legacy
$70–$280 used
2014 Subaru Legacy
$70–$280 used
2013 Subaru Legacy
$55–$220 used
2012 Subaru Legacy
$55–$220 used
2011 Subaru Legacy
$55–$220 used
2010 Subaru Legacy
$55–$220 used
2009 Subaru Legacy
$55–$220 used
2008 Subaru Legacy
$55–$220 used
Showing 18 of 34 years. Use the year picker above to find all years.
The Engine Computer (ECU/ECM/PCM) is your vehicle's brain, controlling fuel injection, ignition timing, emissions, and overall engine performance. A failing ECU can cause check engine lights, poor fuel economy, starting issues, and erratic engine behavior. The Engine Computer (also known as ECU, ECM, PCM) is a critical component for your Subaru Legacy.
Know when your Legacy engine computer needs replacement:
ECU replacement requires matching the unit to your vehicle's VIN. Some units are plug-and-play while others need dealer programming. Used OEM units from the same model year and engine are often preferred as they may not require reprogramming.
$100-$400
$200-$600
$400-$1,200
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