Note
【Note-1】 For 2003 Nissan Sentra with California Emissions, this part fits Downstream.
【Note-2】 For 2003 Nissan Sentra except California Emissions from 4/2003, this part fits Downstream.
【Note-3】 For 2003 Nissan Sentra except California Emissions to 4/2003, this part fits Downstream or Upstream.