KYB 339097 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for Legacy

The KYB Excel-G 339097 is a front left suspension strut for 2005-2009 Subaru Legacy models. It is built to restore original ride control, steering response, and body stability for drivers who want OE-style performance from a direct replacement strut.

KYB’s Excel-G line is an OEA-style replacement series built on the same assembly lines used for OE supply, with OE-quality components and calibration focused on returning the vehicle to its designed handling balance. For Subaru Legacy owners, that means a strut that supports consistent tire contact, braking stability, and lane-change response.

Key Features

• Fits 2005-2009 Subaru Legacy, front left
• KYB Excel-G part number 339097
• Nitrogen gas-charged twin-tube suspension strut
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact and body motion
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Made in USA
• Upper mount type: 12x1.25
• Compressed length: 13.97 in; extended length: 19.84 in; stroke length: 5.87 in

Detailed Description

The KYB Excel-G 339097 is engineered as an OE-style suspension strut for the front left position on the Subaru Legacy. It is calibrated to restore the vehicle’s original ride control rather than change the factory driving feel, making it a practical choice for replacing a worn strut on 2005-2009 Subaru Legacy models. This part cross-references Monroe Shocks & Struts (e.g., 71448) for the same application.

Excel-G is part of KYB’s OE replacement line and is built with the same focus on control, stability, and handling that new-vehicle suspension systems require. The design supports proper steering response, braking consistency, and suspension movement, which is important for vehicles equipped with electronic safety systems that depend on the suspension, brakes, and tires working as intended. The Subaru Legacy part number 339097 is also listed as a replacement for Subaru OE numbers 20310AG01A and 20310AG03A.

What This Strut Helps Address

• Excessive bouncing or poor damping from a worn front strut
• Loose steering feel or delayed lane-change response
• Nose dive during braking
• Uneven tire contact caused by reduced suspension control
• Noise or instability associated with a fatigued suspension strut

Installation Notes and Tips

Fits 2005-2009 Subaru Legacy, front left. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify upper mount thread size and overall dimensions before installation. KYB also recommends protecting the new strut from dirt, debris, and salt with KYB strut boot SB103.

Quality Assurance

KYB is a major OE supplier, and the Excel-G line is produced on KYB OE assembly lines using OE-quality components. The design focus is restoring factory ride control and handling characteristics for Subaru Legacy applications.