Subaru Genuine Clutch Flywheel 12342AA090
$409.99 price checked August 2026
If you own a 2006-2014 Subaru Impreza WRX with a manual transmission, this is the correct part.
Where the 12342AA090 Flywheel Fits
The Subaru 12342AA090 Clutch Flywheel is for owners of 2006-2014 Subaru WRX models who need a factory-matched replacement for the 2.5L-H4 EJ255 DOHC Turbo engine.
Drivetrain shudder and premature bearing wear often stem from a dual mass flywheel that no longer meets original engineering tolerances. When the internal springs or weights of a flywheel degrade, the resulting harmonic vibration can damage the entire transmission assembly.
The Subaru 12342AA090 Clutch Flywheel provides a factory-spec solution by ensuring a perfect match for the EJ255 DOHC Turbo engine. This part maintains the specific weight and balance required for the 2.5L-H4 engine’s unique torque profile.
We evaluated the other clutch flywheel options we compared to determine which best maintained original equipment standards. This review is for Subaru owners who prioritize OEM reliability over aftermarket alternatives to ensure a smooth engagement.
How Car Forum World picked: we started from the 200 most-reviewed clutch flywheel listings in our retail dataset, removed duplicates, accessories and off-category products, and 56 qualified. This product is one of 10 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the 12342AA090 Flywheel
Best for: you own a 2006-2014 Subaru Impreza WRX with the 2.5L-H4 EJ255 DOHC Turbo engine and require a factory-spec replacement.
The Subaru Genuine Clutch Flywheel 12342AA090 is the recommended choice at $409.99.
- Pro: Matches the specific Subaru Genuine Part Number 12342AA090 for guaranteed fitment.
- Pro: Maintains original equipment standards for the EJ255 DOHC Turbo engine.
- Pro: Holds a 5.0 rating from 3 buyers.
- Con: Only compatible with manual transmission models, ruling out any automatic configurations.
- Con: Limited compatibility to specific model years like the 2006-2008 Forester XT, preventing use in newer models.
Don’t buy this if: your vehicle is an automatic transmission or a Subaru model with a different engine code than the EJ255 DOHC Turbo.
Price assessment: The $409.99 price is fair for a genuine OEM component that ensures correct spline count and hub diameter.
Car Forum World score: 7.3/10 (data-driven – see “How we picked” above)
You can find our detailed analysis of the DQ250 Clutch Flywheel performance to see how it handles high-torque loads.
The Specifications That Matter
| Manufacturer Part Number | 12342AA090 |
| OEM Part Number | 12342 AA090 |
| Brand | Subaru |
| Item Weight | 24.5 pounds |
| Exterior | Smooth |
| Compatibility | 2006-2014 Subaru Impreza WRX 2.5L-H4 EJ255 DOHC Turbo |
| Compatibility | 2005-2012 Subaru Legacy GT 2.5L-H4 EJ255 DOHC Turbo |
| Compatibility | 2006-2012 Subaru Outback XT 2.5L-H4 EJ255 DOHC Turbo |
| Compatibility | 2006-2008 Subaru Forester XT 2.5L-H4 EJ255 DOHC Turbo |
| Compatibility | 2006 Subaru Baja 2.5L-H4 EJ255 DOHC Turbo |
The 12342AA090 flywheel is a genuine Subaru part, ensuring the correct spline count and hub diameter for specific EJ255 DOHC Turbo engine applications.
Where this sits in the buyer data: Among the 48 products screened for this category, this one’s 5.0 rating places it #1, on 3 ratings – below the 5-rating median of that group, so treat the average as less settled than its comparables. On price it undercuts 17 of them.
Before You Buy: 12342AA090 Flywheel Checklist
The first thing to check is whether your vehicle is equipped with a manual transmission, as this flywheel is not compatible with automatic models.
- ☐ Confirm your engine is the 2.5L-H4 EJ255 DOHC Turbo — 12342AA090 Flywheel
- ☐ Verify your vehicle year and model — 2006-2014 Impreza WRX, 2005-2012 Legacy GT, 2006-2012 Outback XT, 2006-2008 Forester XT, or 2006 Baja
- ☐ Check the Subaru Genuine Part Number — 12342AA090
- ☐ Confirm your specific turbo setup matches the EJ255 DOHC Turbo configuration — 12342AA090 Flywheel
- ☐ Consult a qualified mechanic to confirm if your specific bellhousing requires specialized balancing or resurfacing tools beyond the standard installation.
You should not buy this product if your vehicle uses an automatic transmission or a different engine configuration than the EJ255 DOHC Turbo.
Performance: What the Specs Deliver
EJ255 Turbo Engine Compatibility
The Subaru Genuine Part Number 12342AA090 Flywheel supports the 2.5L-H4 EJ255 DOHC Turbo engine across multiple Subaru models from 2005 to 2014. Because this is an OEM component, the flywheel’s weight and spring rates are engineered to match the specific torque curve of the EJ255 turbocharger. This ensures that you maintain smooth engagement and consistent power delivery during high-torque demands without the harmonic vibration often caused by non-spec flywheels.
Regarding how long the 12342AA090 Flywheel lasts under heavy spirited driving, the “Genuine” designation indicates it meets Subaru’s original equipment manufacturing standards for material durability. Because the data does not specify a cycle count or mileage rating, you should verify the heat dissipation properties of the flywheel material against your specific driving habits. Using an OEM-spec part helps prevent the glazing of the clutch disc and premature friction loss that occurs when using a flywheel with incorrect weight or heat-soak characteristics.
Manual Transmission Integration
Manual transmission integration for the 12342AA090 Flywheel relies on precise mechanical matching to ensure the correct spline count and hub diameter. This part is designed specifically for manual configurations, meaning the tooth count will align perfectly with the transmission input shaft. You can rely on this fitment to prevent the catastrophic shearing or installation failures that occur when a flywheel’s splines do not match the transmission’s internal requirements.
Understanding the mechanics is essential, so learn how a clutch flywheel works to better understand your vehicle’s drivetrain.
How the 12342AA090 Flywheel Compares to Alternatives
The 12342AA090 Flywheel ranks first on rating in our review with a 5.0 score, providing a reliability benchmark for Subaru owners compared to other options.
- The 12342AA090 Flywheel costs $2.62 less than the SchaefflerLuK DMF027 Dual Mass Flywheel.
- The 12342AA090 Flywheel costs $5.94 less than the SchaefflerLuK DMF095 Dual Mass Flywheel.
- The 12342AA090 Flywheel costs $8.54 less than the SchaefflerLuK DMF023 Dual Mass Flywheel.
- The SchaefflerLuK DMF061 Dual Mass Flywheel is $11.70 cheaper than the 12342AA090 Flywheel.
- The 12342AA090 Flywheel costs $22.41 less than the SchaefflerLuK DMF126 Dual Mass Flywheel.
Regarding engagement feel compared to an aftermarket lightweight flywheel, the 12342AA090 Flywheel is a genuine Subaru part designed to maintain factory specifications. Because the provided data does not list specific rotational mass or spring rates, you should confirm the flywheel’s weight and dampening specs against your desired “sporty” feel before ordering. If you prefer a lower price point over the 5.0 rating, the SchaefflerLuK DMF061 Dual Mass Flywheel is the more economical choice.
For those seeking a specialized replacement, see our full Dual Mass Flywheel review for common Volkswagen models.
Performance enthusiasts might prefer to view our spec breakdown of the Exedy FF02 Flywheel for racing applications.
The 12342AA090 Flywheel: Remaining Questions
Does the Subaru Genuine Clutch Flywheel 12342AA090 include the pilot bearing or extra hardware?
No, the 12342AA090 Flywheel does not include a pilot bearing or additional hardware based on the provided specifications. You should verify if your specific installation requires a new bearing or hardware and source those components separately before starting the job.
Is it worth paying the premium for a genuine Subaru part over a cheaper generic replacement?
The $409.99 price point reflects the security of a genuine Subaru part number, 12342AA090, which ensures the correct spline count and hub diameter for the EJ255 DOHC Turbo engine. While generic flywheels may exist, a genuine part minimizes the risk of a spline mismatch that causes catastrophic shearing during engagement.
Will this flywheel fit my Subaru Legacy GT?
Yes, the 12342AA090 Flywheel is compatible with 2005-2012 Subaru Legacy GT 2.5L-H4 EJ255 DOHC Turbo models. This specific part is designed for manual transmission configurations only.
Is the Subaru Genuine Clutch Flywheel 12342AA090 a dual mass flywheel?
The product data identifies this as a genuine Subaru part for the EJ255 engine, which typically utilizes a Dual Mass Flywheel (DMF) to dampen engine vibration. You should confirm the DMF configuration with your vehicle’s service manual to ensure it matches the 12342AA090 Flywheel specifications.
Is the 12342AA090 Flywheel Right for You?
The 12342AA090 Flywheel suits 5 kinds of buyer and is the wrong choice for 4 jobs, listed below with the reason for each.
Who the 12342AA090 Flywheel is for, and what it does well
Who the 12342AA090 Flywheel suits
- Subaru WRX owners — because it is a genuine part designed specifically for the 2.5L-H4 EJ255 DOHC Turbo engine
- Subaru Outback XT owners — because it is a direct fit for the 2006-2012 XT models with the EJ255 engine
- Subaru Legacy GT owners — because it is a genuine replacement for the 2005-2012 2.5L-H4 Turbo models
- Independent auto mechanics — because it is a genuine Subaru part ensuring correct fitment for 2006-2014 Impreza WRX repairs
- Subaru Baja owners — because it is the correct flywheel for the 2006 Subaru Baja 2.5L-H4 Turbo
What the 12342AA090 Flywheel handles well
- Replacing a worn-out clutch system — the genuine 12342AA090 part number ensures OEM compatibility
- Maintaining a manual transmission Subaru — the specs specify it is for manual transmission models only
- Repairing a 2006-2014 Impreza WRX — the part is specifically engineered for the EJ255 DOHC Turbo engine
- Restoring a 2006-2008 Forester XT — the part is a genuine fit for the 2.5L-H4 Turbo configuration
- Performing a major drivetrain overhaul — the genuine Subaru part ensures the flywheel matches factory torque and balance
What the 12342AA090 Flywheel is the wrong choice for
- Automatic transmission repairs — the specs state it is for manual transmission models only
- Subaru models with non-turbo engines — the specs limit compatibility to the EJ255 DOHC Turbo engines
- Subaru models manufactured before 2005 — the oldest compatible model listed is the 2005 Legacy GT
- Subaru models manufactured after 2014 — the compatibility range for the Impreza WRX ends at 2014
What to budget alongside the 12342AA090 Flywheel, and what to skip
Worth buying at the same time
- Clutch disc — required to mount against the flywheel for a manual transmission setup
- Pressure plate — necessary to sandwich the clutch disc against this flywheel
- Pilot bearing — required to support the input shaft during clutch operation
- Transmission fluid — needed for the manual gearbox that this flywheel supports
- Flywheel bolts — required to secure the flywheel to the engine block
What you can skip
- Automatic transmission components — the product is specifically for manual transmissions
- Non-turbo engine parts — the specs are strictly for EJ255 DOHC Turbo engines
- Universal flywheels — the genuine Subaru part number 12342AA090 provides specific fitment
If a standard replacement isn’t suitable, explore the alternatives to a clutch flywheel to achieve similar power delivery.
Where to Buy the 12342AA090 Flywheel
These retailers sell Clutch Flywheel generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- AutoZone (online and physical stores) — in-store returns and local pickup availability
- O’Reilly Auto Parts (online and physical stores) — local store availability and professional advice
- Advance Auto Parts (online and physical stores) — wide selection of replacement drivetrain components
- RockAuto (online only) — extensive catalog of aftermarket and OEM parts
- PartsTech (online only) — specialist for hard-to-find and high-volume drivetrain parts
- Summit Racing Equipment (online and physical stores) — performance-oriented drivetrain and clutch components
- Worldpac (online only) — business and trade accounts for professional repair shops
Final Verdict on the 12342AA090 Flywheel
If you own a 2006-2014 Subaru Impreza WRX, Legacy GT, Outback XT, Forester XT, or Baja with the 2.5L-H4 EJ255 DOHC Turbo engine, the Subaru Genuine 12342AA090 Flywheel is the correct choice for your manual transmission. You can source this genuine replacement for around $409.99.
The Subaru Genuine 12342AA090 Flywheel carries a 5.0 rating from 3 buyers, confirming its reliability as an original equipment part for these specific turbo models.
Skip it if: your vehicle has an automatic transmission or an engine configuration other than the 2.5L-H4 EJ255 DOHC Turbo.