REAR (Bank 1)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If the warm up TWC is damaged internally, inspect the under floor TWC for debris.

Remove the rear A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT ) and the rear secondary HO2S (Sensor 2) (see SECONDARY HO2S REPLACEMENT ).
Remove exhaust pipe A (see EXHAUST PIPE AND MUFFLER REPLACEMENT ), then remove the rear WU-TWC bracket.
Remove the intermediate shaft (see INTERMEDIATE SHAFT REMOVAL ).
Carefully remove the rear WU-TWC.

Fig 1: Rear WU-TWC Related Replacement Components With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Carefully install the rear WU-TWC with a new gasket and new self-locking nuts. Tighten the nuts in a crisscross pattern in two or three steps.
Install the parts in the reverse order of removal.