The INFINITI FX45 high beam and low beam headlight bulbs both utilize the D2S bulb size for xenon HID lighting systems. The replacement chart covers vehicle production spanning 2003 to 2008 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The D2S bulb is the sole headlight bulb type specified for the Infiniti FX45 across all model years from 2003-2008, serving both the high beam and low beam functions.
D2S is a High-Intensity Discharge (HID) xenon bulb, meaning it produces light by creating an electrical arc through xenon gas rather than heating a filament, which is the operating principle of traditional halogen bulbs.
The D2S bulb carries an ECE standard rating, indicating it meets European and international regulatory requirements for road use.
D2S bulbs are fitted with a P32d-2 base, which is a bayonet-style connector specific to this bulb family and not shared with halogen or other HID base types.
The D2S specification is designed exclusively for projector-type headlight housings, which use a lens and reflector system to focus the arc discharge into a controlled beam pattern.
An external ignitor is required to operate a D2S bulb, as the ignitor generates the high-voltage pulse needed to initiate the arc discharge before the ballast takes over to sustain it.
The D2S bulb operates at 85 volts and 35 watts, figures that reflect the stepped-down operating voltage maintained by the ballast after the initial high-voltage ignition strike.
Because both the high beam and low beam positions on the FX45 use the same D2S specification, beam switching is achieved through the projector housing mechanism rather than through separate bulb types.