Subaru FA20 Engine for Sale
$4,499.00
At a Glance
- Condition: OEM used, compression and leak-down tested all 4 cylinders
- Availability: In stock, Subaru FA20 boxer-4 engine available across FA20D NA and FA20DIT turbo variants
- Shipping: Free shipping to all 50 states via heavy freight, 7 to 14 business days
- Engine variant verified (FA20D NA naturally-aspirated for BRZ / 86 / FR-S, OR FA20DIT turbo with direct injection for WRX 2015 plus)
- CRITICAL: NA FA20D and Turbo FA20DIT variants are substantially different despite shared family
- Application confirmed (Subaru BRZ, Toyota 86 / GT86, Scion FR-S, Subaru WRX 2015 plus, Subaru Forester XT)
- Horsepower rating documented (200-205 HP FA20D NA, 268 HP FA20DIT turbo)
- Compression and leak-down tested all 4 cylinders (horizontally-opposed boxer)
- Both cylinder heads condition documented
- Direct injection system condition assessed (D-4S dual injection on FA20D)
- Turbocharger condition assessed (FA20DIT only)
- 15 day replacement warranty on internal defects
Description
About the Subaru FA20 Boxer-4 Engine
Looking for a replacement Subaru FA20 engine? Part Nests stocks OEM used Subaru FA20 2.0L horizontally-opposed boxer-4 engines across FA20D naturally-aspirated and FA20DIT turbocharged variants. The FA20 is Subaru’s modern 2.0L boxer-4 engine from the FA engine family, representing Subaru’s transition to direct injection and (in the FA20D NA application) the joint Subaru / Toyota co-developed engine for the BRZ / 86 / FR-S sports car. The FA20 family launched in 2012-2013 for the BRZ / 86 / FR-S co-development project, and the FA20DIT turbo variant launched in 2015 for the redesigned WRX, succeeding the EJ255 turbo (per our listing) in WRX applications. Two distinct FA20 variants: FA20D (NA D-4S dual injection for sports car applications) and FA20DIT (direct injection turbo for WRX 2015 plus).
Engine Overview: FA20 Architecture
- Displacement: 2.0 liters (1,998 cc)
- Configuration: Horizontally-opposed boxer-4 (180-degree opposed cylinders)
- Bore x Stroke: 86 mm x 86 mm (square configuration; same bore as Toyota 1ZZ / 2ZZ series for shared development)
- Cylinder Head: Aluminum, DOHC, 4 valves per cylinder (16 valves total)
- Block: Aluminum (with cast iron cylinder liners)
- Variable Valve Timing: Dual AVCS (both intake and exhaust)
- Fuel System: D-4S dual injection (FA20D NA, both direct AND port injection), OR direct injection only (FA20DIT turbo)
- Timing chain driven (FA family uses chain, NOT belt like EJ family /)
- Heritage: Subaru’s modern boxer family launched 2012-2013, successor to EJ family in modern applications
- Co-development: FA20D NA jointly developed by Subaru and Toyota for the BRZ / 86 / FR-S sports car
FA20 Variant Reference
FA20D Naturally-Aspirated (Sports Car Applications):
- Power output: 200 HP (US 2012-2016), 205 HP (US 2017 plus update)
- Peak torque: 151 lb-ft at 6,400-6,600 RPM (high-RPM peak torque)
- Compression ratio: 12.5:1 (high compression for NA performance)
- Fuel system: D-4S dual injection (both direct AND port injection – Toyota innovation)
- Applications: Subaru BRZ (2012 plus), Toyota 86 / GT86 (2012 plus, also branded Scion FR-S in US 2012-2016)
- Character: High-revving NA boxer designed for sports car application; peak torque at high RPM
FA20DIT Direct-Injection Turbocharger (WRX Application):
- Power output: 268 HP at 5,600 RPM
- Peak torque: 258 lb-ft at 2,000-5,200 RPM (flat torque curve via turbo)
- Compression ratio: 10.6:1 (high for turbo, due to direct injection efficiency)
- Fuel system: Direct injection only (NOT D-4S dual)
- Turbocharger: Twin-scroll turbo with electronically controlled wastegate
- Applications: Subaru WRX 2015 plus (succeeded EJ255), Subaru Forester XT 2014-2018
- Character: Modern turbo with flat torque curve, succeeding the older EJ255 turbo in WRX
D-4S Dual Injection: Toyota Co-Development Heritage
The FA20D NA variant uses Toyota’s D-4S dual injection system, which combines port fuel injection AND direct fuel injection in the same engine. Benefits: port injection at low RPM provides smoother running and prevents intake valve carbon buildup (a common direct-injection issue), while direct injection at higher RPM provides power and efficiency benefits. The D-4S system is Toyota engineering (also used in Lexus IS / RC, Toyota Highlander, and other Toyota / Lexus applications), incorporated into the FA20D via the Subaru / Toyota co-development for the BRZ / 86 / FR-S sports car. This is the only Subaru engine to use D-4S dual injection; the FA20DIT turbo variant uses direct injection only.
FA20D NA vs FA20DIT Turbo: Critical Distinction
The FA20D NA and FA20DIT Turbo share the FA20 base architecture but are substantially different engines:
- Fuel system: D-4S dual injection (NA) vs direct injection only (turbo)
- Compression ratio: 12.5:1 (NA, high for NA performance) vs 10.6:1 (turbo, high for turbo due to direct injection efficiency)
- Power character: High-revving peak torque at 6,400-6,600 RPM (NA) vs flat torque curve 2,000-5,200 RPM (turbo)
- Application: Sports car (BRZ / 86 / FR-S, NA) vs performance sedan / SUV (WRX / Forester XT, turbo)
- Cooling capacity: Turbo applications have larger radiator, intercooler, and oil cooler
- Internal components: Turbo variant has reinforced internals to handle boost pressure
NA and turbo variants are NOT interchangeable. Specify variant when ordering.
Subaru Boxer Engine Family Context
The Subaru FA20 (this listing) is the modern Subaru / Toyota co-developed boxer engine representing the FA family era of Subaru engineering. For broader Subaru boxer engine context across our catalog, the Subaru EJ25 engine (our listing, the 2.5L EJ25 boxer-4 in NA and Turbo EJ255 / EJ257 variants for Impreza / Legacy / Outback / Forester / WRX / STI applications 1996-2018) is the EJ family predecessor with port fuel injection that the FA family succeeded in modern applications. The FA20DIT turbo (this listing’s WRX variant) specifically succeeded the EJ255 turbo in WRX applications starting 2015. The Subaru 2.5 overview engine (our listing) covers the broader 2.5L Subaru boxer family. The Subaru EJ253 engine (our listing) covers the SOHC NA EJ253 variant specifically. Four Subaru boxer engine listings across : EJ25 turbo and non-turbo (EJ family predecessor), (this listing) FA20 modern Subaru / Toyota co-developed direct-injection boxer (FA family modern), Subaru 2.5 overview, EJ253 SOHC NA specifically.
Common FA20 Failure Modes
- Carbon buildup on intake valves (FA20DIT direct-injection turbo only): Direct injection inherent wear pattern requiring walnut shell blasting every 60,000-100,000 miles. The FA20D NA does NOT have this issue because the D-4S dual injection system uses port injection at low RPM to wash intake valves.
- Oil consumption (early FA20D 2012-2014): Some early FA20D examples exhibited elevated oil consumption; Subaru issued service campaigns and updated piston rings in later production
- Direct injection HPDI fuel pump cam follower wear: Standard direct-injection wear pattern (both FA20D and FA20DIT)
- Timing chain wear: Less common than EJ timing belt issues since FA family uses chain, but possible at very high mileage
- Turbocharger failure (FA20DIT only): Twin-scroll turbo can fail at high mileage; less common than EJ255 turbo failures
- AVCS solenoid wear: Dual AVCS solenoids can fail causing variable valve timing codes
Vehicle Compatibility
| Feature | EJ-Series (Older) | FA-Series (Current) |
|---|---|---|
| Development | Subaru | Joint Subaru-Toyota |
| Block Design | Open-deck aluminum | Semi-closed deck aluminum (stronger) |
| Head Gasket Issues | Significant on NA variants | Greatly reduced |
| Bore x Stroke (2.0L) | 92 x 75 mm (long-stroke EJ20) | 86 x 86 mm (square FA20) |
| Character | Torquey, low-revving | High-revving, sports car character |
| Production Years | 1989-2021 | 2012-present |
FA20 Variant Specifications
| Variant | Years | Aspiration | HP | Torque | Common Applications |
|---|---|---|---|---|---|
| FA20D / 4U-GSE | 2012-2021 | NA | 200-205 HP at 7,000 RPM | 151-156 lb-ft at 6,400-6,600 RPM | BRZ, Toyota 86, Scion FR-S |
| FA20DIT | 2014-2021 | Turbo | 268 HP at 5,600 RPM | 258 lb-ft at 2,000-5,200 RPM | WRX, Forester XT, Levorg JDM |
| FA20F | Limited | Turbo | Various | Various | Some Forester XT applications |
D-4S Dual Injection and Direct Injection Reference
| Vehicle | Compatibility |
|---|---|
| Subaru BRZ | 2013-2020 (FA20D / 4U-GSE, 200 HP NA) |
| Toyota 86 | 2017-2020 (was Scion FR-S 2013-2016, same engine, Toyota name 4U-GSE) |
| Scion FR-S | 2013-2016 (US market, became Toyota 86 in 2017) |
| Toyota GT86 | European market, 2012-2020, same engine |
Common Failure Modes and Maintenance Reference
| Vehicle | Compatibility |
|---|---|
| Subaru WRX | 2015-2021 (FA20DIT, 268 HP turbo, replacing previous EJ255 in 2015) |
| Subaru Forester XT | 2014-2018 (FA20DIT turbo) |
| Subaru Levorg | JDM 2014-2020 (FA20DIT) |
Why Buy From Part Nests
- Engine variant verified (FA20D NA for BRZ / 86 / FR-S, OR FA20DIT turbo for WRX 2015 plus)
- CRITICAL FA20D NA vs FA20DIT Turbo distinction confirmed before sale
- Application confirmed (Subaru BRZ, Toyota 86 / GT86, Scion FR-S, Subaru WRX 2015 plus, Subaru Forester XT)
- Horsepower rating documented (200-205 HP FA20D NA, 268 HP FA20DIT turbo)
- Compression and leak-down tested all 4 cylinders
- Both cylinder heads condition documented
- Direct injection system condition assessed (D-4S dual on FA20D, direct only on FA20DIT)
- Turbocharger condition assessed (FA20DIT only)
- Free shipping to all 50 states via heavy freight
- 15 day replacement warranty on internal defects
- Subaru-experienced support team familiar with FA20 / EJ25 distinction and Toyota co-development
- Call (855) 634-4447 for fitment confirmation and to lock in your order.
15 Day Replacement Warranty
Every used Subaru FA20 engine purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date.
What Is Covered
- Internal defects already present when the engine arrives
- Compression failures on any of the 4 cylinders beyond what was disclosed
- Cylinder head crack failures within 15 days from installation
- Block crack failures within 15 days from installation
- Connecting rod, bearing, or crankshaft failures within 15 days from installation
- HPDI high-pressure fuel pump failures within 15 days from installation
- Direct injection injector failures within 15 days from installation
- D-4S dual injection system failures within 15 days from installation (FA20D NA variant)
- Turbocharger internal failures within 15 days from installation (FA20DIT variant)
- Timing chain failures within 15 days from installation
- Dual AVCS solenoid failures within 15 days from installation
- Incorrect variant shipped (FA20D NA vs FA20DIT Turbo mismatch where variant was documented) due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from incorrect engine oil (Subaru specifies 0W-20 synthetic for FA family; using incorrect viscosity causes accelerated wear)
- Damage from extended oil change intervals (3,750-5,000 mile intervals recommended; turbo variants benefit from shorter intervals)
- Damage from contaminated fuel (FA20DIT turbo requires 91 octane minimum)
- Damage from neglected carbon cleaning service (FA20DIT direct injection inherent wear pattern requiring service every 60,000-100,000 miles)
- Damage from cross-application (FA20D NA installed where FA20DIT turbo was ordered without ECU / fuel system / cooling verification, or vice versa)
- External components (intake manifold, exhaust manifolds, turbocharger if not supplied or noted as ancillary, ECU and wiring harness, accessory drive, transmission, AC compressor, alternator, starter, fuel tank, fuel lines outside engine) unless itemized
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (855) 634-4447.
- All 4 Cylinders Compression and Leak-Down Tested: Results documented before payment
- Engine Variant Verified: FA20D NA or FA20DIT Turbo correctly identified
- CRITICAL FA20D NA vs FA20DIT Turbo Distinction Confirmed: Substantially different engines
- Application Confirmed: BRZ / 86 / FR-S (NA) or WRX 2015 plus / Forester XT (turbo)
- Horsepower Rating Documented: 200-205 HP NA, 268 HP turbo
- Direct Injection System Assessed: D-4S dual (FA20D) or direct only (FA20DIT)
- Turbocharger Condition Assessed: FA20DIT twin-scroll turbo checked
- 15 Day Replacement Cover: Internal defects protected from delivery onward
Additional information
| Brand | Subaru |
|---|---|
| engine-family | Subaru FA-series flat-4 boxer (joint Subaru-Toyota development) |
| variants | FA20D / 4U-GSE (NA), FA20DIT (turbo), FA20F (Forester XT variant) |
| manufacturer | Subaru Corporation (joint with Toyota) |
| configuration | Flat-4 (horizontally opposed boxer) |
| displacement | 2.0L (1, 998 cc) |
| bore-x-stroke | 86.0 mm x 86.0 mm (square) |
| hp-fa20d-na | 200-205 HP at 7, 000 RPM |
| hp-fa20dit-turbo | 268 HP at 5, 600 RPM |
| torque-fa20d-na | 151-156 lb-ft at 6, 400-6, 600 RPM |
| torque-fa20dit-turbo | 258 lb-ft at 2, 000-5, 200 RPM |
| compression-fa20d | 12.5:1 |
| compression-fa20dit | 10.6:1 |
| aspiration-fa20d | Naturally aspirated |
| aspiration-fa20dit | Turbocharged with intercooler |
| fuel-system-fa20d | Toyota D-4S dual injection (port + direct) |
| fuel-system-fa20dit | Direct injection only |
| fuel-type | Premium 91 octane minimum, 93 recommended (both variants) |
| valvetrain | DOHC, 16 valves, AVCS (intake + exhaust) |
| block | Aluminum, semi-closed deck |
Subaru's modern 2.0L boxer-4 with Toyota co-development for BRZ / 86. The Subaru FA20 is Subaru's modern 2.0L horizontally-opposed boxer-4 engine from the FA engine family, representing Subaru's transition to direct injection and (in the FA20D NA application) the joint Subaru / Toyota co-developed engine for the BRZ / 86 / FR-S sports car. The FA20 family launched in 2012-2013 for the BRZ / 86 / FR-S co-development project, and the FA20DIT turbo variant launched in 2015 for the redesigned WRX, succeeding the EJ255 turbo (per our listing) in WRX applications. Two distinct FA20 variants: FA20D (NA D-4S dual injection for sports car applications) and FA20DIT (direct injection turbo for WRX 2015 plus). Specifications: 2.0 liters (1,998 cc), horizontally-opposed boxer-4, bore x stroke 86 mm x 86 mm (square), aluminum DOHC 16-valve, dual AVCS, timing chain driven (FA family uses chain NOT belt like EJ family).
Substantially different engines despite shared FA20 family. The FA20D NA and FA20DIT Turbo share the FA20 base architecture but are substantially different engines. Fuel system: D-4S dual injection (NA) vs direct injection only (turbo). Compression ratio: 12.5:1 (NA, high for NA performance) vs 10.6:1 (turbo, high for turbo due to direct injection efficiency). Power character: high-revving peak torque at 6,400-6,600 RPM (NA) vs flat torque curve 2,000-5,200 RPM (turbo). Application: sports car (BRZ / 86 / FR-S, NA) vs performance sedan / SUV (WRX / Forester XT, turbo). Cooling capacity: turbo applications have larger radiator, intercooler, and oil cooler. Internal components: turbo variant has reinforced internals to handle boost pressure. NA and turbo variants are NOT interchangeable. Specify variant when ordering.
Toyota's dual injection system combining port AND direct fuel injection. The FA20D NA variant uses Toyota's D-4S dual injection system, which combines port fuel injection AND direct fuel injection in the same engine. Benefits: port injection at low RPM provides smoother running and prevents intake valve carbon buildup (a common direct-injection issue), while direct injection at higher RPM provides power and efficiency benefits. The D-4S system is Toyota engineering (also used in Lexus IS / RC, Toyota Highlander, and other Toyota / Lexus applications), incorporated into the FA20D via the Subaru / Toyota co-development for the BRZ / 86 / FR-S sports car. This is the only Subaru engine to use D-4S dual injection; the FA20DIT turbo variant uses direct injection only. The result: FA20D NA does NOT have the typical direct-injection carbon buildup problem since port injection cleans intake valves, while FA20DIT turbo DOES require periodic walnut shell blasting service every 60,000-100,000 miles.
BRZ / 86 / FR-S (NA), WRX 2015 plus and Forester XT (turbo). FA20D Naturally-Aspirated applications: Subaru BRZ (2012 plus), Toyota 86 / GT86 (2012 plus, also branded Scion FR-S in US 2012-2016) - the sports car application with high-revving NA boxer designed for sports car character with peak torque at high RPM (6,400-6,600 RPM). FA20DIT Direct-Injection Turbocharger applications: Subaru WRX 2015 plus (succeeded EJ255 turbo in WRX), Subaru Forester XT 2014-2018 - the modern turbo with flat torque curve from 2,000-5,200 RPM via direct injection turbo with twin-scroll turbocharger and electronically controlled wastegate. The FA20 family represents Subaru's transition from the older EJ engine family (port injection, timing belt) to modern direct-injection technology with timing chain.
Four Subaru boxer engines in. The Subaru FA20 (this listing) is the modern Subaru / Toyota co-developed boxer engine representing the FA family era. The Subaru EJ25 is the 2.5L EJ25 boxer-4 in NA and Turbo EJ255 / EJ257 variants (used in Impreza / Legacy / Outback / Forester / WRX / STI applications 1996-2018), the EJ family predecessor with port fuel injection that the FA family succeeded in modern applications. The FA20DIT turbo specifically succeeded the EJ255 turbo in WRX applications starting 2015. The Subaru 2.5 overview engine covers the broader 2.5L Subaru boxer family. The Subaru EJ253 engine covers the SOHC NA EJ253 variant specifically. Four Subaru boxer engine listings across : EJ25 turbo and non-turbo (EJ family predecessor), (this listing) FA20 modern Subaru / Toyota co-developed direct-injection boxer (FA family modern), Subaru 2.5 overview, EJ253 SOHC NA specifically.
Six well-documented failure modes. Carbon buildup on intake valves (FA20DIT direct-injection turbo only): direct injection inherent wear pattern requiring walnut shell blasting every 60,000-100,000 miles. The FA20D NA does NOT have this issue because the D-4S dual injection system uses port injection at low RPM to wash intake valves. Oil consumption (early FA20D 2012-2014): some early FA20D examples exhibited elevated oil consumption; Subaru issued service campaigns and updated piston rings in later production. Direct injection HPDI fuel pump cam follower wear: standard direct-injection wear pattern (both FA20D and FA20DIT). Timing chain wear: less common than EJ timing belt issues since FA family uses chain, but possible at very high mileage. Turbocharger failure (FA20DIT only): twin-scroll turbo can fail at high mileage; less common than EJ255 turbo failures. AVCS solenoid wear: dual AVCS solenoids can fail.
Carbon cleaning (FA20DIT only), oil consumption check (early FA20D), HPDI service. After acquiring a used FA20 engine, budget for these items. Carbon cleaning service (FA20DIT direct-injection turbo only): $600-1,200 for walnut shell blasting on intake valves; recommended every 60,000-100,000 miles. NOT required for FA20D NA due to D-4S dual injection. Oil consumption check (early FA20D 2012-2014): inspect for elevated oil consumption; verify Subaru service campaign completion on affected VINs. HPDI fuel pump cam follower inspection: standard direct-injection wear item. Strict synthetic oil maintenance: 3,750-5,000 mile intervals with Subaru-approved 0W-20 synthetic oil (turbo benefits from shorter intervals). Premium fuel for FA20DIT turbo: 91 octane minimum (93 recommended). For FA20D NA: 91 octane recommended for performance, 87 octane acceptable for normal driving.
No. There is no core return required.
2 reviews for Subaru FA20 Engine for Sale
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Sebastian H. –
Picked one up for my Subaru FA20 Engine build. Showed up quick and matched the description.
Quintessa A. –
Right spec for the Subaru FA20 Engine. Painless process.