Xenon Bulbs
Xenon bulbs with D-series bases are installed only in headlights with factory xenon. This section includes 5 items for D1S, D2S and D4S bases: classic HID bulbs (Osram D2S CoolBlue, Niken Pro-series D4S) and Niken Pro-series LED bulbs D1S, D2S, D4S that fit in place of xenon. The first step in choosing is the marking on the base of your old bulb: D1S, D2S and D4S are not interchangeable.
What D1S, D2S, D4S markings mean
| Base | Feature | Available in this section |
|---|---|---|
| D1S | Igniter is built into the bulb base | Niken Pro-series LED bulb D1S |
| D2S | Bulb connects to a separate ballast | Osram D2S CoolBlue xenon, Niken Pro-series LED bulb D2S |
| D4S | Mercury-free version with a separate ballast; not interchangeable with D2S | Niken Pro-series D4S xenon, Niken Pro-series LED bulb D4S |
The letter S in the marking means a bulb for projector (lens) headlights, R is for reflector headlights: the capsules are different, so D2S and D2R don’t replace each other either. The number and letter must match your old bulb exactly.
Xenon or LED bulb to replace xenon
An HID bulb works with the factory ballast and produces the light pattern your optics were designed for. Osram D2S CoolBlue has a glass capsule and is made in Germany. Niken Pro-series LED bulbs with D1S, D2S and D4S bases are an option for those who want white light: 32 W power, 8000 lm luminous flux, 6500 K color temperature. They install into the factory location without special tools, and each bulb is sold individually. Before buying the LED version, check there’s enough space behind the headlight for the bulb body and the dust cover.
How to choose the right xenon bulb for your car
- Remove the old bulb or check its marking—it’s printed on the base.
- Confirm the headlight type: projector (S) or reflector (R).
- Choose what you’re installing: a xenon bulb or an LED bulb with the same base.
- If you’re unsure, send a photo of the bulb and the headlight to the manager—this is more accurate than selecting by model year or VIN.
It’s better to replace bulbs in pairs: the old and new bulbs can differ in color shade, and the left and right headlights will look different. Keep in mind that factory xenon cannot be directly replaced with a halogen bulb, and a halogen headlight can’t be converted to xenon by simply swapping the bulb.
What else is in the auto bulbs section
For headlights with halogen bases H1, H3, H4, H7, H8/H9/H11, H27, HB3 and HB4, see Niken LED bulbs from the Eco, Pro and Nova series. If an LED bulb doesn’t lock into the factory socket, you’ll need an adapter for LED bulbs, and to prevent a dashboard error you may need a Canbus adapter. All bulb types are collected in the Auto bulbs section.
This description was prepared with the help of AI based on the analysis of over 1 million phone calls between DD Tuning managers and customers, plus the company knowledge base. We collected the questions customers ask most often and added answers verified in real use.














