The Acura ILX high beam headlight uses a 9005 bulb size while low beam headlights require either H11 or D2S bulb sizes. The replacement chart covers vehicle production years spanning 2013 to 2015 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9005 bulb is an ANSI-standard single-filament halogen type rated at 12V and 65W, fitted with a P20d base. It serves as the high beam headlight bulb across all three model years of the Acura ILX covered in these specifications (2013-2015).
The low beam headlight position on the ILX accommodates two distinct bulb types depending on the headlamp system installed at the factory, meaning the correct replacement bulb is determined by the specific headlamp configuration of the vehicle rather than the model year alone.
The H11 is an ECE-standard single-filament halogen bulb rated at 12V and 55W, using a PGJ19-2 base. It is specified for low beam use on 2013-2015 ILX vehicles equipped with halogen capsule headlamps, and it carries approval for use in the United States despite its European regulatory origin.
The D2S is an HID (xenon) discharge bulb operating at 85V and 35W, fitted with a P32d-2 base. It is specified for low beam use on 2013-2015 ILX vehicles equipped with HID headlamps and is designed specifically for projector-type housings.
The D2S bulb requires an external ignitor to initiate the high-voltage arc that produces light, which distinguishes it operationally from the halogen types used elsewhere in the same vehicle's lighting system.
The H11 and 9005 bulbs share the same 12V operating voltage but differ in wattage, base type, and regulatory standard, making them physically and electrically non-interchangeable despite both being halogen single-filament types.
The base types across all three bulbs in these specifications are distinct: P20d for the 9005, PGJ19-2 for the H11, and P32d-2 for the D2S. Each base type is unique to its respective bulb family, preventing cross-fitment between positions.