KYB 334400 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for Lexus RX and Highlander

KYB Excel-G strut 334400 is an OE-style suspension strut built to restore original ride control, stability, braking response, and steering feel. It is a direct-fit front left replacement for select Lexus RX and Toyota Highlander applications, including Lexus RX350, RX400h, RX330, and Toyota Highlander models.

Excel-G Product Line

The KYB Excel-G line is calibrated to return the vehicle to its original designed damping characteristics rather than change the ride. This nitrogen gas-charged, twin-tube design uses OE-quality components and is assembled on KYB production lines used for original equipment manufacturing.

Key Features

• OE-style replacement strut for Asian SUVs and crossovers
• Restores designed control and handling on Lexus RX applications
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Supports proper operation of electronic safety systems by maintaining suspension behavior as engineered
• Heavy-duty strut body and bracket design helps minimize flex and maintain alignment
• Part number 334400

Detailed Description

KYB 334400 is a front left suspension strut engineered for drivers who want original-equipment ride characteristics on the Lexus RX and Toyota Highlander platform. It is a strong match for 2007-2009 Lexus RX350, 2006-2008 Lexus RX400h, 2001-2007 Toyota Highlander, and 2004-2006 Lexus RX330 front left applications. This part cross-references Monroe Shocks & Struts 72212 for the same application.

Built with KYB’s OE-focused Excel-G tuning, this strut helps control bounce, body roll, lane-change response, and braking stability without altering the vehicle’s intended ride quality. The part number 334400 is also listed as an OE-style replacement for select Lexus RX and Highlander front suspension service.

What It Helps Address

• Excessive front-end bounce or float
• Reduced steering precision during lane changes
• Nose dive under braking
• Uneven tire contact caused by worn damping
• Noise or vibration related to worn strut components

Installation Notes and Tips

Fits 2007-2009 Lexus RX350, front left; 2006-2008 Lexus RX400h, front left; 2001-2007 Toyota Highlander, front left; and 2004-2006 Lexus RX330, front left. For Lexus RX350 and RX330 applications, this listing excludes air suspension. For Lexus RX400h and Toyota Highlander applications, replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends new strut mounts, part number SM5423, and a KYB strut boot, part number SB102, to help reduce noise and protect the strut from road debris.

Quality Assurance

KYB is a global OE supplier, and Excel-G is produced on the same KYB assembly lines used for original equipment manufacturing. The design uses OE-quality components and application-specific damping calibration to support factory-style suspension performance.