Lincoln MKC high beam and low beam headlight bulbs both use the D3S size. The replacement chart covers 2015 to 2019 production years 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.
ECE standard (Europe & worldwide). Mercury-free HID (xenon) discharge bulb with PK32d-5 base and integral ignitor, for projector-type housings. 42V, 35W.
The Lincoln MKC uses the D3S bulb in both the high beam and low beam headlight positions across all model years from 2015-2019.
The D3S 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 method used in traditional halogen bulbs.
D3S bulbs operate at 42 volts and 35 watts, requiring a dedicated ballast system within the vehicle to regulate the high-voltage ignition pulse needed to strike the arc.
The D3S carries the PK32d-5 base type and includes an integral ignitor built directly into the bulb body, meaning the ignitor and bulb are replaced as a single unit rather than separately.
The D3S is rated under the ECE standard, a regulatory framework recognized across Europe and many other markets worldwide, governing output, color temperature, and safety requirements for automotive lighting.
The D3S is specifically designed for projector-type headlight housings, which use a lens and reflector system to focus and shape the light beam, and is not interchangeable with reflector-type housings that require differently constructed bulb types.
The mercury-free construction of the D3S distinguishes it from earlier HID types such as the D2S, which contained mercury and are subject to stricter disposal regulations in many regions.
Because the D3S shares a similar physical form with the D1S and D4S, fitment verification against the PK32d-5 base specification is necessary, as those related types use different base configurations and voltage requirements that are not compatible with D3S sockets.