The Maserati Ghibli high beam and low beam headlight bulbs both utilize a D3S size specification. The replacement chart covers vehicle production years spanning 2014 to 2020 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
ECE standard (Europe & worldwide). Mercury-free HID (xenon) discharge bulb with PK32d-5 base and integral ignitor, for projector-type housings. 42V, 35W.
The D3S is the sole bulb type specified across all model years and headlight positions in the Maserati Ghibli headlight bulb specifications, covering both high beam and low beam applications from 2014 through 2020.
The D3S is a discharge bulb type belonging to the High-Intensity Discharge (HID) family. It operates without an internal ignition electrode, instead relying on an external igniter, and runs on alternating current supplied by a ballast unit.
The "S" designation in D3S indicates that the bulb is shrouded, meaning it has a UV-blocking quartz outer jacket. This shroud is a safety and optical requirement in projector-style HID headlamp housings.
For the 2018-2020 Maserati Ghibli, the D3S fitment is explicitly noted as applying to vehicles equipped with HID headlamps, indicating that headlamp system type is a required condition for this bulb specification.
The D3S bulb is not interchangeable with other D-series bulb types such as D1S, D2S, or D4S. Each D-series type has a distinct connector configuration and voltage requirement, making cross-substitution electrically and physically incompatible.
D3S bulbs operate at a nominal power of 35 watts and produce a color temperature typically rated at 4200 Kelvin, which renders a white light with a slight blue-white quality compared to halogen sources.
Because the D3S is a mercury-free bulb type, it is compliant with European Union end-of-life vehicle directives, a relevant characteristic for a manufacturer with European production origins.
The high beam and low beam positions share the same D3S specification across all listed years for the Ghibli, which is consistent with single-bulb bi-xenon projector headlamp systems that use one discharge bulb per housing to serve both functions through a mechanical shutter.