2009Nissan Sentra 2.0L I4 California Emissions. 2010Nissan Sentra 2.0L I4 California Emissions. 2012 Nissan Sentra 2.0L I4 California Emissions. 2011Nissan Sentra 2.0L I4 California Emissions. Specialized machinery is used for precision and consistency in crafting components, ensuring optimal fuel atomization and combustion efficiency.