The sealing rings are synthetic resin with chamfered ends. Check the condition of the sealing rings, and replace them only if they are worn, distorted, or damaged.
For a better fit, squeeze sealing rings together slightly before installing them.

Apply ATF to the new sealing rings, then install them on the secondary shaft.

After installing the sealing rings, verify the following:
The rings are fully seated in the groove.
The rings are not twisted.
The chamfered ends of the rings are properly joined.
M/T Differential Carrier/Final Driven Gear Replacement (M/T)
Loosen the bolts in a crisscross pattern in several steps, then remove
the final driven gear (A) from the differential carrier (B).
Install the final driven gear with the cham ...
Guidance Menu
MAP MENU (on map)
►Guidance Menu
Display the guidance points and freeway exits for your route, and set the
display
mode for the map and guidance screens.
Select an item.
The following ...
High-Mount Brake Light Bulb
High-mount brake light bulb is a LED type. Have an authorized Honda dealer
inspect
and replace the light bulb. ...