The air intake hose connects your Sentra's air box to the throttle body allowing air to enter your engine. Overtime the factory air intake hose can crack or develop holes resulting in a check engine light (CEL), poor fuel economy, and hesitation during acceleration. This replacement air intake hose by AA Ignition is a direct replacement for your factory air intake hose. Simply remove the factory air intake hose on your Sentra and install this hose in its place. The installation is simply and can be completed in about 10 minutes.Fit's the following vehicles:2007 Sentra 2.0L 2008 Sentra 2.0L 2009 Sentra 2.0L 2010 Sentra 2.0L 2011 Sentra 2.0L 2012 Sentra 2.0L Replaces part numbers: 16576-ET00A, 16576ET00A, 16576 ET00AThis part is not a genuine OEM part, it is manufactured by AA Ignition and comes with a Lifetime warranty. The term , Sentra, and associated part numbers are used only to identify the vehicles this air intake hose fits.