KYB 335031 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for Pathfinder and QX4

The KYB Excel-G 335031 is a front left suspension strut for select 1999-2000 INFINITI QX4 and Nissan Pathfinder models. Built to restore original ride control and handling, it is a direct OE-style replacement for drivers who want factory-correct suspension response.

Excel-G Product Line Details

KYB Excel-G struts are calibrated to return the vehicle’s original damping characteristics rather than change the ride feel. This line uses a nitrogen gas-charged, twin-tube design and OE-quality components assembled on KYB production lines used for original equipment applications.

Key Features

• Fits 2000 INFINITI QX4, front left, recommended OEM replacement; to 09/2000
• Fits 2000 Nissan Pathfinder, front left, recommended OEM replacement; to 09/2000
• Fits 1999 INFINITI QX4, front left, recommended OEM replacement; from 12/1998
• Fits 1999 Nissan Pathfinder, front left, recommended OEM replacement; from 12/1998
• Vehicle-specific damping valves help manage tire contact, steering response, and body movement
• Triple-lip fluid seal helps reduce the chance of oil and gas leakage
• Heavy-duty strut body and bracket design helps minimize flex and maintain alignment
• Electronic safety systems rely on suspension performance that matches the vehicle manufacturer’s design

Detailed Description

KYB 335031 is engineered for the front left position on select Nissan Pathfinder and INFINITI QX4 SUVs. It is an OE-style suspension strut that restores ride control, lane-change response, braking stability, and handling balance without changing the vehicle’s original suspension tuning. The Excel-G design uses hand-assembled, vehicle-specific damping valves and a nitrogen gas-charged twin-tube construction to support consistent performance. This part cross-references Monroe Shocks & Struts 71574 for the same application.

What It Helps Address

• Excessive front-end bounce or oscillation
• Loose steering feel during lane changes
• Reduced body control over bumps and uneven pavement
• Oil seepage or gas loss from a worn strut
• Alignment instability caused by flex in a fatigued strut body

Installation Notes and Tips

For reduced noise and vibration, KYB recommends replacing the strut mount with part number SM5329. To help protect the new strut from dirt, debris, and road salt, KYB also recommends strut boot SB129. Verify the vehicle’s build date and front-left application before installation, since fitment is limited to the listed 1999-2000 Pathfinder and QX4 configurations.

Quality Assurance

KYB is a major OE supplier, and the Excel-G line is built on the same production lines used for original equipment applications. The 335031 is designed to meet the original suspension performance profile for the listed vehicles and positions.