GTMOTO D3S HID Xenon Headlight Bulbs for Audi A4 A6 Q5 Q7 6000K 35W — Plug-and-Play D3S (PK32d-5)

GTMOTO D3S bulbs are 35W HID xenon replacement lamps designed to restore and brighten factory D3S projector headlights on compatible Audi models.

These D3S (PK32d-5) xenon bulbs deliver a cooler, whiter 6000K light and higher effective brightness compared with many stock 4300K units, while matching OEM physical fitment for plug-and-play replacement in Audi bi-xenon projector systems. They are meant for vehicles that use factory 35W AC D3S xenon bulbs and work with the existing ballast and headlight housings — they are not compatible with halogen reflector systems or DC 12V filament bulbs.

Will these D3S bulbs fit my Audi?

If your vehicle came with factory D3S xenon bulbs (PK32d-5) and uses an AC ballast, these GTMOTO D3S lamps are a direct replacement with no modification required. They are commonly used in Audi A3, A4, A5, A6, A7, A8 and Q5/Q7 models equipped with bi-xenon projectors.

• Fits OEM D3S/PK32d-5 sockets used in many Audi bi-xenon headlights.
• Not compatible with halogen bulbs (H7/H11/H1/9006 etc.) or reflector housings.
• Requires the vehicle's existing ballast — do not install on DC 12V filament systems.

How much brighter and whiter are these compared to stock bulbs?

GTMOTO rates these as approximately 1.5× brighter than many stock D3S units and shifts color temperature from warm OEM tones to a daylight-like 6000K. The result is improved contrast and a whiter beam appearance without altering beam pattern in projector housings.

• 6000K color for crisp, cool white output versus typical 4300K warm white stock bulbs.
• Higher luminous effect for clearer visibility of road markings and signs.
• Maintains proper projector cutoff when used in factory housings and ballasts.

What installation steps are required?

Installation is designed to be quick and straightforward — most owners report completing the swap in about ten minutes per side. Because these bulbs follow OEM dimensions, installation requires only access to the headlight rear cover and seating the bulb into the factory socket.

• Remove headlight access cover, unplug original D3S bulb, and seat GTMOTO D3S bulb flush in socket.
• Reattach retaining hardware and headlight cover; no wiring changes or additional ballast needed if original is present.
• Always check for secure connection and correct beam aim after installation.

How long will these bulbs last and what are they made of?

The GTMOTO D3S bulbs use anti-UV quartz glass and precision laser cutting to improve durability and lifespan; expected life is in the multi-thousand-hour range under normal operating conditions. They use xenon gas discharge technology and are manufactured to mirror OEM form and function.

• Anti-UV quartz glass construction resists yellowing and heat degradation.
• Designed for thousands of hours of operation when paired with a functioning ballast.
• Sold as a two-piece set to replace both headlight bulbs for balanced color and intensity.

Who is this for? GTMOTO D3S bulbs are aimed at Audi owners with factory 35W D3S bi-xenon projector headlights who want a whiter, brighter beam without modifying the vehicle’s wiring or headlamp optics. Do not purchase if your vehicle uses halogen filament bulbs (H7/H11/9006 etc.) or if you lack the factory xenon ballast; verify your bulb type before ordering.