This Bilstein B6 front left strut assembly (MPN 22-266842) is listed for the 2016-2017 Fiat 500X 4WD. The manufacturer describes the B6 as a bolt-on upgrade for stock suspension, using a yellow monotube gas-pressure damper tuned firmer than OE. It is designed to work with the factory coil springs, so the car keeps its original ride height without lowering. Bilstein's B6 line is also made in Germany.
Stock dampers on a crossover that has covered many miles lose control over bumps and in corners. The manufacturer says the B6 gives firmer, more precise damping than a stock shock. Owners on user forums have reported dealer quotes above $800 for front strut replacement, so a performance-valved strut that bolts in at a lower price is a practical choice for drivers who want firmer handling without a full coilover conversion.
The manufacturer states the B6 is sized for stock-height springs and should be used on OE springs. Its lowering-spring counterpart, the B8, is the option for a lowered car.
Owners on user forums recommend fitting new OEM strut mounts when the strut is replaced.
User forum discussions give mixed answers on this swap, so confirm fitment with the manufacturer before ordering.
Owners on user forums describe strut replacement on the 500X as fairly straightforward, with one main extra step: the cowl sides must be removed to reach the strut top. Plan to replace the upper strut mounts with the strut, and follow the manufacturer's installation instructions for torque values and the spring-compressor procedure. Support the vehicle securely and use an alignment afterward.