Compatible with all versions of the Ford Super Duty from 2017 to 2022, they will fit all trucks with OE incandescent, OE incandescent with BLIS, or the OE LED with BLIS tail lights... Yes you read that correctly.Even if your truck does not have the BLIS system, the XB tails will still fit, work properly, and add that high-end vibe to your truck. They will not however magically enable the BLIS function. Everything has been thoughtfully designed to be completely plug n play with the factory wiring harness and radar system, use all of the stock mounting points, and should not take more than 30 minutes to install both taillights. OE LED + BLIS SYSTEM. 100% Plug n Play (Requires swap of OE Modules). INCANDESCENT TAIL LIGHTS + BLIS. 100% Plug n Play (with included adapter harness). All Funtions of the tails work as intended. Comes included with the all adapter harness. Lenses and housing show barely any signs of wear and tear. NOTE: All sales are final!