Description
Subaru FA20 Engine for Sale
The Subaru FA20 engine for sale here is a flat-4 boxer that tugs at the heartstrings of many enthusiasts. It’s a compact powerplant, high in versatility and tuning potential. Having been used in popular cars like the Subaru BRZ and Toyota 86 (in NA FA20D form) and the Subaru WRX and Forester XT (in FA20DIT turbocharged form), it offers performance and efficiency in a good mix. Its flat-four design contributes to improved vehicle handling due to the low center of gravity. While the NA variant might not be the most powerful engine in stock form, where it truly excels is at character and revability , it can also be tuned for more power. Its reliability and responsiveness make this motor a favorite of everyone from daily drivers to weekend racers. If you’re searching for “brz engine for sale,” “scion fr-s engine,” “toyota 86 engine,” “wrx fa20 engine,” or general subaru fa20 , this is the right listing.
The FA-Series Engine Family (Different from EJ-Series)
Important context: the Subaru FA20 is part of the FA-series engine family, which is a completely NEW engine family Subaru developed in joint partnership with Toyota Motor Corporation starting in 2012. The FA-series is separate from and unrelated to the older EJ-series engines (EJ20, EJ25, etc.) that powered Subarus from 1989 to 2021.
Differences between the FA-series and EJ-series:
The FA-series represents a clean-sheet redesign that addresses many of the EJ-series’s known service items while introducing new characteristics suited to modern Subaru applications.
FA20 Variant Breakdown
FA20D / 4U-GSE (Naturally Aspirated) , Live Page Stock
The sports car NA variant used in BRZ/86/FR-S:
Displacement: 2.0L (1,998 cc)
HP: 200-205 HP at 7,000 RPM
Torque: 151-156 lb-ft at 6,400-6,600 RPM
Compression: 12.5:1 (one of the highest production NA compression ratios)
Aspiration: Naturally aspirated
Fuel System: Toyota D-4S dual injection , port injection + direct injection
Redline: 7,400 RPM (high-revving for a boxer)
Toyota Name: 4U-GSE (same engine, Toyota designation)
Production: 2012-2021
Applications: Subaru BRZ (2013-2020), Toyota 86 (2017-2020, was Scion FR-S 2013-2016), GT86 (European market)
The FA20D is famous for its sports car character , high-revving, light, and engaging. The unique D-4S dual injection system uses BOTH port injection (at low loads for smoother operation and to reduce intake valve carbon buildup) and direct injection (at high loads for power and efficiency). This system enables the high 12.5:1 compression ratio.
Common owner observation: the FA20D has a documented torque dip in the 3,000-5,000 RPM range , the engine produces strong torque at low RPM, dips slightly in the mid-range, then comes alive past 5,500 RPM toward redline. Owners often describe the engine as wanting to be revved.
FA20DIT (Turbocharged) , WRX / Forester XT Variant
The turbocharged FA20 variant:
Displacement: 2.0L (1,998 cc)
HP: 268 HP at 5,600 RPM
Torque: 258 lb-ft at 2,000-5,200 RPM , broad torque curve
Compression: 10.6:1 (lower than NA for boost)
Aspiration: Turbocharged with IHI VF series turbo and intercooler
Fuel System: Direct injection only (no port injection on turbo)
Production: 2014-2021
Applications: Subaru WRX (2015-2021, replacing the previous EJ255), Subaru Forester XT (2014-2018), Subaru Levorg (JDM 2014-2020)
The FA20DIT in the WRX produces notably more low-end torque than the previous EJ255 it replaced (258 lb-ft from 2,000 RPM vs the EJ255’s later peak), making the 2015+ WRX more drivable in everyday conditions. The Forester XT used the same engine for capable family-SUV performance.
FA20F (Limited)
A variant used in certain Forester XT applications with slightly different state of tune. Less common than the FA20DIT.
FA20 Variants Summary
Key Engineering Features
Flat-4 (Boxer) Configuration: Lower center of gravity, inherent primary balance
Luke Carter (verified owner) –
Received the Subaru FA20 engine from Vaz Auto Solutions. It’s reliable and does what it’s supposed to do. While it’s a decent upgrade from the standard engine, it doesn’t offer a dramatic change in performance. It’s a solid choice for improved efficiency without any major surprises.
Daniel Scott (verified owner) –
The Subaru FA20 engine from Vaz Auto Solutions is phenomenal! The power and agility it brings to my vehicle are incredible. It’s a real thrill to drive, with responsive acceleration and smooth performance. The engine upgrade has truly enhanced my driving experience. Definitely worth the investment!