Under-Floor TWC Removal/Installation

Raise the vehicle on a lift.
Remove the under-floor TWC (A).

Fig 1: Under-Floor TWC, Gaskets And Self-Locking Nuts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the parts in the reverse order of removal with new gaskets (B) and new self-locking nuts (C).