This item is a brand new OE style replacementexhaust system. It will fit the following years and models.

1998-2000 Replacement Parts For Nissan ALTIMA 2.4L , With California Emissions ( Altima with California Emissions uses (2) Converters the first is a pre converter at engine manifold and the 2nd is the main under car converter. )
2001 Replacement Parts For Nissan Altima 2.4L , all emissions
STOP: do not order until you read your emission label under your hood, this has nothing to due with what State your car is registered in , STOP read your label if you cant find the Label or are not sure contact your dealer with your vin number

Kit Includes:
1x 47820-1 1stExtension pipe
1x 47820-2 2nd Extension pipe
1x 792300 Rear muffler
1x 9099 31540 Front gasket
2x FEH560 35725 rubber supports
1x mc200hd muffler clamp
1x55260 Connector clamp