KYB 339243 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for Prius

The KYB Excel-G suspension strut, part number 339243, is built to restore original ride control, stability, and steering response on select Toyota Prius applications. It is a front left replacement for 2010-2015 Toyota Prius and 2012-2015 Toyota Prius Plug-In models.

KYB Excel-G is an OE-style replacement line made on KYB assembly lines with OE-quality components and calibration focused on returning the vehicle to its designed handling characteristics. For Prius owners looking for a direct suspension strut replacement, 339243 is engineered around factory performance targets rather than changing the ride feel.

Key Features

• Fits 2010-2015 Toyota Prius, front left
• Fits 2012-2015 Toyota Prius Plug-In, front left
• 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 minimize flex and maintain alignment
• Made in USA
• Upper mount type: 14X1.50
• Compressed length: 13.51 in; extended length: 19.61 in; stroke length: 6.10 in

Product Details

KYB Excel-G is a suspension strut line developed for restoring factory ride control on Asian vehicles, including the Toyota Prius. Part number 339243 uses KYB’s OE-focused construction and damping calibration to help return predictable braking feel, lane-change response, and overall handling balance. This part cross-references Monroe Shocks & Struts 72689 for the same application.

Common Problems This Strut Can Address

• Excessive bounce or float after bumps
• Reduced steering precision during lane changes
• Uneven tire contact caused by worn front suspension damping
• Noisy or unstable front-left strut performance
• Loss of original ride control on a Toyota Prius or Prius Plug-In

Installation Notes and Tips

Install on the front left position only for the listed Prius applications. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify all mounting dimensions before installation, including the 14X1.50 upper mount specification. KYB recommends protecting new struts from road debris with strut boot SB112.

Quality Assurance

KYB is a major OE supplier, and Excel-G is built on the same production lines used for original-equipment shock and strut manufacturing. The line is calibrated to restore factory-designed performance and includes KYB’s OE-quality components and sealing design for consistent suspension operation.