BMW 750i high beam headlight bulbs use H7 or D1S size, while low beam headlight bulbs use D1S size. The replacement chart covers 2006 through 2016 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 H7 bulb is a halogen type operating on a single filament, rated at 55 watts with a standard PX26d base. It produces light through a tungsten filament enclosed in a halogen gas-filled quartz envelope, which allows for higher operating temperatures and greater luminous output compared to conventional incandescent bulbs.
The D1S bulb is a high-intensity discharge (HID) type that generates light through an electrical arc between two tungsten electrodes within a xenon gas-filled quartz burner. It requires a ballast to regulate the high-voltage ignition pulse and sustain the arc during operation. The D1S designation indicates a single-beam projector-style burner with an integrated igniter.
The BMW 750i uses D1S bulbs exclusively across all model years from 2006-2016 for the low beam headlight position, making it the sole bulb type for that function throughout the entire production span covered by these specifications.
For the high beam headlight position, the BMW 750i shows a split between H7 and D1S fitments depending on the year and headlamp system installed. The 2006-2008 and 2016 model years list only H7, while 2009-2012 include both H7 and D1S options, and 2013-2015 list both with the D1S explicitly noted as applying to vehicles equipped with HID headlamps.
The condition "With HID Headlamps" attached to certain D1S high beam entries from 2009-2015 indicates that two distinct headlamp systems were available on the 750i during those years. Vehicles without HID headlamps in those years used the H7 halogen bulb for the high beam instead.
H7 and D1S bulbs are not interchangeable. The H7 uses a low-voltage halogen circuit, while the D1S requires a dedicated HID ballast and igniter system operating at significantly higher voltages. Substituting one for the other is not possible without modifying the vehicle's electrical and optical systems.
The 2011-2012 model years list D1S for the high beam without the "With HID Headlamps" qualifier that appears in adjacent years, though H7 is also listed for 2012. The 2011 high beam entry lists only D1S, suggesting that year's specification does not include an H7 alternative.
Because multiple bulb sizes are listed for the same position in several model years, the correct bulb for a given vehicle depends on which headlamp system that specific unit was built with, not solely on the model year.