The Bilstein 24-158848 is a front steering damper from the B8 5100 line, designed as an upgrade over the factory unit on Ford Excursion 4WD trucks. It uses a 46mm monotube gas-pressure design, the same basic construction Bilstein uses in its shock absorbers, and the manufacturer positions it to dampen small steering inputs and the vibration that worn factory dampers let through. Owners on user forums often report steering shimmy that gets worse with larger tires, and a stronger damper is a common fix for it.
Stock dampers wear out and leak, and owners on user forums have reported factory units failing around 70,000 miles. Some owners have replaced them with budget units that failed within about a year, so paying for a Bilstein is mainly about avoiding a repeat job. The zinc-plated body is meant to resist corrosion. Search terms that fit this product include Excursion 4WD steering damper upgrade, B8 5100 46mm monotube damper, 2000-2005 Excursion steering stabilizer replacement, and Excursion steering shimmy fix. Confirm your year and trim against the manufacturer's application guide before ordering.
The manufacturer lists no boot included with the 24-158848. Owners on user forums say whether to add a boot is a personal choice.
Owners on user forums say a healthy damper should feel fairly firm, similar to a shock absorber. If the piston moves easily by hand or the unit is leaking, replacement is the usual recommendation.
The manufacturer lists a replacement mounting kit, part B4-KT1-Z232A00, for this series. Confirm with the manufacturer whether your installation needs it.
Owners on user forums describe this as a straightforward bolt-in job that uses the factory mounting points, with the manufacturer's install directions included in the box. One owner who installed a Bilstein 5100 unit on a Ford truck recommends turning the steering wheel fully to one side to remove the old unit, and following the directions for bracket position before tightening anything. That same owner found the clevis bent upward and had to pry it back into shape before the new unit would seat, so check the clevis before you start. Use the torque values from the manufacturer's instructions, and wear eye protection when prying on old, seized hardware.
