Bulb size & fitment reference

2009–2011 Acura CSX
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 →

Low Beam

D2R

Shop this position →

Reverse Light

7440

Shop this position →

Brake Light

7443

Shop this position →

Before You Buy: Factory Lighting Can Vary

Your vehicle may use different factory lighting systems. Check the applicable system before ordering.
Halogen bulb example

Halogen

Halogen bulbs are the standard factory bulbs and are easy to replace.

HID bulb and ballast example

HID

HID bulbs provide higher intensity light and require a ballast.

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 →
Low BeamD2RHIDShop position →
Fog LightH11Shop position →
Daytime Running Light9005 / HB3Shop position →
Front Turn Signal1157Shop position →
Parking Light1157Shop position →
Rear Turn Signal7440Shop position →
Brake Light7443Shop position →
Center High Mount Stop Light7440Shop position →
Tail Light7443Shop position →
Reverse Light7440Shop position →
License Plate Light168Shop position →
Front Side Marker Light1157Shop position →
Rear Side Marker Light168Shop position →
Dome LightDE3175Shop position →
Map LightDE3175Shop position →
Trunk Light168Shop position →
Cargo Light168Shop 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 →