Bulb size & fitment reference

2021 Nissan Altima
Bulb Size Guide

Get the bulb-size answer first, then check factory-system differences and position-specific notes before buying.

Select Your Vehicle

Quick Answer

Start with the positions you’re most likely to replace. Full fitment details are below.

High Beam

9005 / HB3

Shop this position →

Reverse Light

921

Shop this position →

Brake Light

7443

Shop this position →

Cornering Light

921

Shop this position →

Full Bulb Fitment by Lighting Position

Find the bulb size for each lighting position and check any fitment notes before ordering.
Lighting PositionBulb SizeNoteNext Step
High Beam9005 / HB3Shop position →
Fog LightH11Shop position →
Cornering Light921Shop position →
Front Parking LightT10 / 194 / 168Shop position →
Rear Turn Signal7443Shop position →
Brake Light7443Shop position →
Reverse Light921Shop position →
License Plate LightT10 / 194 / 168Shop position →
Rear Side Marker LightT10 / 194 / 168Shop position →
Side Marker LightT10 / 194 / 168Shop position →
Dome LightT10 / 194 / 168Shop position →
Courtesy LightT10 / 194 / 168Shop position →
Glove Box LightT10 / 194 / 168Shop position →
Stepwell LightT10 / 194 / 168Shop position →
Trunk LightT10 / 194 / 168Shop position →
Luggage Compartment LightT10 / 194 / 168Shop position →
Fitment Reminder
Bulb size can vary by factory setup. If you're unsure which option applies to your vehicle, confirm your current bulb or select your configuration on the product page.View Fitment Options →