Sentra XE L4-1.8L (QG18DE) (2000)
CAUTION: If the Calif. CA Model's TWC (manifold three way catalyst) or ADS-TWC (adsorber 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.