The BMW 535i GT uses D1S and H7 bulb sizes for high beam headlight applications, with D1S serving as the low beam headlight bulb size. The replacement chart covers vehicle production spanning 2010 to 2017, detailing bulb size specifications across this model generation.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The D1S bulb type is the most prevalent specification across both high beam and low beam positions in the BMW 535i GT, appearing across the 2010-2017 model range in one or both positions. It operates at 85V and 35W, uses a PK32d-2 base with an integral ignitor, and is designed exclusively for projector-type housings. Its higher operating voltage relative to standard automotive bulbs is a characteristic of high-intensity discharge (xenon) technology.
The H7 bulb is a single-filament halogen type rated at 12V and 55W with a PX26d base. In the 535i GT specifications, it is listed for the high beam position in the 2010-2011 model years and as an alternative high beam option for the 2013 model year when equipped with halogen capsule headlamps.
The 2013 BMW 535i GT high beam position carries two distinct bulb specifications depending on headlamp type: D1S for vehicles fitted with HID headlamps and H7 for those fitted with halogen capsule headlamps. These two configurations are not interchangeable, as they differ in operating voltage, base type, and housing design requirements.
The low beam position uses the D1S bulb across all listed model years (2010-2017), while the high beam position transitions from H7 in 2010-2011 to D1S from 2012 onward (with the noted 2013 dual-option exception). This reflects a difference in headlamp system configuration between those two positional roles across certain model years.
Both the D1S and H7 bulbs conform to ECE standards, which govern lighting equipment in Europe and many markets worldwide. The H7 additionally carries approval for use in the United States and Japan, whereas the D1S specification does not reference those regional approvals.
The D1S bulb incorporates an integral ignitor as part of its construction, which distinguishes it from other HID bulb types that require a separate ignitor component. This integration is a defining characteristic of the D1S standard and affects replacement and fitment considerations.
Because the D1S is rated for projector-type housings specifically, it is not a drop-in substitute for reflector-type housings. Fitment of a D1S bulb outside of a compatible projector housing would fall outside the intended application defined by the ECE standard.