KYB 339270 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for BMW

KYB Excel-G strut 339270 is a front left suspension strut for select BMW applications, including 2006-2013 BMW 3 Series and 1 Series models. Built to restore original ride control, steering response, and body stability, this OE-style replacement is calibrated for factory-like handling rather than a changed ride feel.

Key Features

• KYB Excel-G OEA replacement strut for factory-style suspension performance
• Nitrogen gas-charged, twin-tube design for consistent damping
• 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 construction helps minimize flex and maintain alignment
• Internal rebound spring included; upper mount type: 12X1.25
• Compressed length: 11.61 in.; extended length: 16.33 in.; stroke length: 4.72 in.

Product Details

The KYB Excel-G line is built on KYB OE assembly lines using OE-quality components and calibration targets that match the vehicle’s original suspension behavior. For BMW owners looking for a direct replacement front left strut, KYB 339270 is engineered to help restore the designed balance between ride comfort, lane-change response, braking stability, and handling precision. This part cross-references Monroe Shocks & Struts 71582 for the same application.

What This Strut Helps Address

• Excessive bouncing or oscillation after bumps
• Reduced steering response during lane changes
• Nose dive under braking and unstable front-end feel
• Uneven tire contact caused by worn damping
• Noise or vibration associated with a fatigued front strut

Installation Notes

Fits 2008-2013 BMW 128i, front left; 2008-2013 BMW 135i, front left; 2012-2013 BMW 328i, front left; 2007-2013 BMW 335i, front left; 2011-2013 BMW 335is, front left; 2007-2011 BMW 328i, front left; 2009-2011 BMW 335d, front left; 2006 BMW 325i, front left; and 2006 BMW 330i, front left. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends new strut mounts, part number SM5260, to reduce the chance of noise and vibration.

Quality Assurance

KYB is a major OE supplier of shocks and struts, and the Excel-G line is produced with the same manufacturing approach used for original equipment applications. KYB 339270 is calibrated to restore factory-designed suspension performance on BMW models without sport suspension or with the listed OE configurations.