KYB Suspension Shock Absorber P/N:3440137
Firm up a bouncing, wallowing ride with the KYB shock absorber 341728, a nitrogen gas-charged, twin-tube Excel-G damper built to restore your BMW's original ride control. It installs as a direct-fit rear left replacement for the 2007-2013 BMW X5 and 2008-2014 BMW X6 — see the Buyer's Guide tab for engine-level fitment.
KYB's Excel-G line is engineered to bring back the vehicle's designed control, handling, and stability rather than change it — earning KYB's OEA (Original Equipment for the Aftermarket) classification, since it's built on the same OE assembly lines KYB supplies to new-vehicle manufacturers.
If worn dampers are behind your excessive bounce, nose-dive under braking, or sloppy lane-change response, this KYB gas shock absorber Excel-G replaces the failed unit. Rear shocks work as a pair — replace both sides together for balanced ride control.
Interchange: 33526781921 · 33526781927 · 37347
This part cross-references / interchanges with the following part numbers:
Does this KYB shock absorber fit my BMW?
It's a rear left direct-fit replacement for the 2007-2013 BMW X5 and 2008-2014 BMW X6. Check the Buyer's Guide tab to confirm engine-level fitment for your vehicle.
What position is this KYB gas shock absorber?
It is cataloged as the rear left shock absorber for the listed applications. Rear dampers work as a pair, so replacing both sides together is recommended for balanced ride control.
What is the Excel-G design?
A nitrogen gas-charged, twin-tube shock built on KYB's OE assembly lines. It's classified OEA (Original Equipment for the Aftermarket) and is calibrated to restore the vehicle's original designed performance.
What does the triple-lip seal do?
The triple-lip fluid seal is designed to reduce the chance of oil and gas leaking out of the shock, helping the damper maintain consistent performance.
What are signs this shock may need replacing?
Excessive bounce, nose-dive under braking, poor lane-change response, or fluid leakage can signal a worn damper. Diagnose the cause first; if the shock is the problem, this replaces it.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.