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The Genuine Subaru OEM Clutch Master Cylinder (Part #37230AG051) is the factory-original hydraulic component responsible for converting clutch pedal input into the hydraulic pressure needed to disengage your clutch. Designed specifically for the 2005–2009 Subaru Legacy GT and Outback XT, this direct-fit replacement ensures precise clutch engagement, long-term reliability, and the exact performance characteristics your turbocharged Subaru was engineered to deliver. Choosing an OEM part means no guesswork — it fits perfectly and performs exactly as Subaru intended.
| Part Number | 37230AG051 |
|---|---|
| Brand | Genuine Subaru OEM |
| Component Type | Clutch Master Cylinder |
| Application | 2005–2009 Subaru Legacy GT, 2005–2009 Subaru Outback XT |
| Drivetrain | Manual Transmission (MT) |
| Fluid Type | DOT 3 / DOT 4 Brake/Clutch Fluid |
| OEM Part Number | 37230AG051 |
The Clutch Master Cylinder is a bolt-on replacement that mounts to the firewall and connects directly to the clutch pedal assembly and hydraulic line. Replacement requires draining and refilling the clutch hydraulic system and bleeding the line to remove air. While mechanically inclined owners with proper tools can perform this repair at home, professional installation by a Subaru-trained technician is recommended to ensure correct bleeding procedure and system integrity. Always use fresh DOT 3 or DOT 4 clutch fluid as specified in your owner's manual.
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