The headlights in your 2007 Nissan Altima are a semi-sealed-beam type. They may be halogen or xenon lamps. Because the headlight assembly has to be removed from the car to change the bulbs, Nissan recommends you take it to a dealer.
The low beam in your Altima is either a 55W halogen bulb No. H11, or a xenon bulb No. D2R. The high beam is a 65W halogen bulb No. H9. Part numbers are updated as improvements are made to existing part designs. Check with the parts department at your Nissan dealer for updated parts information.
