The Bilstein B6 (HD) 24-068802 is a rear 36mm monotube shock absorber for the Mercedes-Benz C-Class (W203). The manufacturer's application guide lists it as the rear B6 (HD) match for the C240 and C320 (2001-2005) and several C230, C320, CLK and CLK63 AMG variants, paired with front part 35-053446. Upgrading from stock damping with this B6 (HD) unit gives you a firmer, more controlled rear end for spirited road driving, while keeping the factory spring and ride height. For buyers comparing lower-cost aftermarket dampers, the B6 line is positioned as a performance upgrade over OE dampers, with application-specific valve settings aimed at better handling and stability.
Rear-end replacement on the W203 is a practical bolt-on job for a home mechanic, and owners on user forums who have fitted B6 rear dampers on other platforms commonly report that the install is straightforward once the mounting bolts come out. Gas-charged units like this one need to be compressed with a jack to line up the lower mount, and the upper nut sits recessed in the mount, so use a socket with a hex key holding the shaft still to avoid twisting the rod. Check the new bump stop and dust boot against the old ones, and reuse the bump stops supplied with the shock, per common owner practice. Search terms: W203 C230 C240 C320 rear B6 HD shock, Bilstein 24-068802 rear monotube upgrade, C-Class rear shock replacement, Bilstein B6 HD W203 install.
The manufacturer's application guide lists part 24-068802 for the rear of several W203 applications, including the C240 and C320 for 2001-2005, plus C230, C320, CLK and CLK63 AMG variants. Check your exact model and year against the guide before ordering.
The manufacturer's application guide pairs this rear part with front part 35-053446 for the same B6 (HD) application listings. Confirm the correct front part for your submodel with the manufacturer.
This is a moderate-difficulty rear job for a home mechanic with a jack, jack stands, a socket set, and a hex key. Owners on user forums suggest removing the wheel, supporting the chassis on stands, and using a jack to push the shock up while starting the upper bolts. Because the shock is gas-charged, compress it as needed to line up the lower mount, and avoid turning the shaft. Install the supplied bump stop and dust boot, and torque all fasteners to the figures in the manufacturer's instructions.
