For Reference only:
2009 ALTIMA Elec Cont Unit (ECU); (by battery tray), Cpe, 2.5L (4 cyl), AT (CVT), Fed
2009 ALTIMA Elec Cont Unit (ECU); (by battery tray), Sdn, 2.5L (4 cyl), AT (CVT), non-Hybrid, Fed 
Please make sure item matches your car before you buy. All ECU/Engine computers/Airbag modules need to be reprogrammed in order to work properly. We are not responsible for labor costs.
PLEASE MATCH PART NUMBER BEFORE BUYING!