The BMW 740Li high beam and low beam headlight bulbs both utilize a D1S size. The replacement chart covers 2011 to 2015 model 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.
The D1S is a high-intensity discharge (HID) xenon bulb rated at 85 volts and 35 watts, built to the ECE standard used in Europe and worldwide markets.
The D1S uses a PK32d-2 base and incorporates an integral ignitor, meaning the ignition component is built directly into the bulb unit rather than housed separately in the vehicle's electrical system.
This bulb type is designed exclusively for projector-type headlamp housings, and substituting it into reflector-type housings would produce incorrect light output.
Both the high beam and low beam headlight positions on the BMW 740Li use the D1S bulb across all listed model years (2011-2015), indicating a single bulb type serves both functions in this application.
The 2013-2015 entries carry a "With HID Headlamps" qualifier, which signals a conditional fitment tied to a specific factory-installed headlamp configuration rather than a universal fit across all trim variants of those years.
Because the D1S integrates its ignitor into the bulb body, it is not interchangeable with the D1R bulb, which shares the same wattage and voltage ratings but differs in base design and is intended for reflector housings.