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TIER 1 — BOXER ENGINE SPECIALIST
Subaru Used Engines
Inspected, low-mileage Subaru boxer engines — the FB-series, the EJ-series, and the turbocharged FA powerplants. Compression-tested and ready to ship with a warranty.
Tested
Compression Checked
Subaru Engines: The Boxer Difference
Subaru is the one mainstream brand that builds almost nothing but horizontally-opposed "boxer" engines. Instead of cylinders standing upright or in a V, they lie flat and punch outward against each other — which lowers the engine's center of gravity, reduces vibration, and pairs naturally with Subaru's signature symmetrical all-wheel drive. That architecture is the reason Subarus feel planted and balanced.
The modern lineup runs the FB-series naturally-aspirated boxer (2.0L and 2.5L) across the Outback, Forester, Legacy and Crosstrek, while the legendary EJ and high-performance FA turbo engines power the WRX and STI. Because Subaru shares engine families so consistently across its range, a verified-mileage replacement is realistic to find. Every Subaru engine we list is drained, inspected, and compression-tested before shipping.
Why Subaru Engines Earn Their Reputation
FB25 2.5L Boxer Four
The volume engine of the Outback, Forester and Legacy — a smooth, naturally-aspirated boxer built for all-weather everyday reliability.
Cross-compatible: Outback, Forester, Legacy, Ascent base — same FB25 family.
FB20 2.0L Boxer Four
The efficient base boxer behind the Impreza and Crosstrek — light, economical, and tuned for all-wheel-drive everyday driving.
Cross-compatible: Impreza, Crosstrek, base Forester — shared FB20 boxer family.
EJ25 Turbo Boxer
The legendary turbocharged boxer of the WRX and STI — an icon of the rally-bred performance world with a devoted following.
Cross-compatible: WRX, STI, Legacy GT, Forester XT — shared EJ turbo family.
FA20 / FA24 Turbo Boxer
The modern direct-injection turbo boxer of the newer WRX, Ascent and Outback XT — strong torque with improved efficiency.
Cross-compatible: Ascent, Outback XT, Legacy XT, WRX — shared FA24 turbo.
🔎 Match Your Engine by VIN
The engine code in your Subaru VIN identifies displacement and whether it's turbocharged. Share your VIN when you contact us and our team will confirm the exact match — FB vs. EJ vs. FA, turbo vs. naturally-aspirated — before anything ships. No guesswork.
Available Subaru Engines
Browse our in-stock inventory below — more units available than shown.
Can't See Your Subaru Engine?
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Share your year, model & VIN and we'll do the rest.
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