KYB 339121 Suspension Strut - Front Right

KYB Excel-G Front Right Strut for Subaru Impreza

The KYB Excel-G 339121 is a front right suspension strut for 2004-2007 Subaru Impreza models. Built to restore original ride control and steering response, it is a direct OE-style replacement for drivers addressing worn suspension performance on this application.

Key Features

• Fits 2004-2007 Subaru Impreza, front right
• KYB Excel-G line calibrated to restore factory ride control and handling
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket design helps maintain alignment under load
• Made in USA
• Upper mount type: 14X1.50
• Compressed length: 14.56 in; extended length: 20.66 in; stroke length: 6.10 in

Product Details

KYB Excel-G struts are built on the same OE assembly lines used for original equipment supply and are calibrated to return the vehicle to its designed suspension behavior rather than alter it. For the Subaru Impreza, part number 339121 supports stable braking, lane-change response, and consistent handling by controlling spring and wheel movement at the front right corner. This part cross-references Monroe Shocks & Struts (e.g., 72439) for the same application.

The Excel-G product line is positioned as an OE-style replacement choice for Asian vehicles, and this Subaru Impreza front right strut follows that approach with OE-quality components and application-specific valving. KYB part number 339121 is also referenced against Subaru OE numbers 20311FE040, 20311FE0409L, 20312FE020, and 20312FE0209L.

Common Issues This Strut Can Address

• Excessive bouncing after bumps
• Loose or delayed steering response
• Nose dive during braking
• Uneven tire contact caused by worn damping
• Reduced stability in lane changes and cornering

Installation Notes and Tips

Install on the front right position only for the listed Subaru Impreza applications. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends new strut mounts, part number SM5361, to reduce noise and vibration, and a KYB strut boot, part number SB103, to help protect the new strut from dirt, debris, and salt.

Quality Assurance

KYB is a major OE supplier, and the Excel-G line is manufactured using OE-quality components with application-specific calibration to help keep suspension, braking, and electronic safety systems operating as the vehicle manufacturer intended.