QG18DE (CALIF. Ca Model)

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: If the Calif. CA Model's TWC (manifold three way catalyst) or ADS-TWC (absorber pre-catalyst) replacement is necessary, always replace the TWC together with the ADS-TWC. Never replace these catalysts individually. The TWC and the ADS-TWC are only available together as a kit.

Fig 1: Identifying Emission Related Components (CALIF. CA Model)

Courtesy of NISSAN MOTOR CO., U.S.A.