Xenon headlight bulb Ledvance D1S 66140CBN (Cool Blue Intense) — single unit

Single xenon headlight bulb Ledvance D1S 66140CBN (Cool Blue Intense) is a direct-replacement gas discharge lamp designed for vehicles equipped with D1S xenon fittings. The lamp provides a cool white to slightly blue-tinted beam that aligns with OEM D1S performance characteristics, enabling clear road illumination and an updated headlight appearance without modifying the vehicle's headlight unit. This single unit is intended for use where one D1S xenon lamp needs replacement.

Advantages

The lamp offers a cool-color light output that improves perceived whiteness of the beam while maintaining the luminous intensity and beam pattern expected from D1S xenon systems. It is manufactured to fit standard D1S sockets for straightforward installation and to meet thermal and electrical requirements of factory xenon ballasts. As a single unit, it allows targeted replacement without purchasing a pair.

Suitable for

• Replacement of a single D1S xenon headlight bulb in compatible vehicles
• Restoring correct beam pattern and light output after bulb failure
• Updating headlight appearance to a cooler white tone while keeping OEM fit

Key specifications

• Type: D1S xenon (high-intensity discharge) lamp
• Light characteristic: Cool Blue Intense (cool white / blue-tinted appearance)
• Form factor: single-unit lamp for D1S socket
• Intended use: automotive low-beam / headlight applications with compatible xenon ballast
• Compatibility: designed for vehicles that accept D1S lamps and original-style xenon modules

How to use

Before replacing the bulb, ensure the vehicle ignition is off and the xenon system is cooled down; xenon lamps operate at high voltages and can remain hot after use. Wear gloves or use a clean cloth to avoid touching the glass envelope, as skin oils can shorten lamp life or cause hot spots. Remove the headlight cover and release the retaining mechanism for the existing bulb according to the vehicle manufacturer's procedure, disconnect the electrical connector, and install the Ledvance D1S lamp by seating it securely in the D1S socket and reconnecting the connector. Reassemble the headlight components and test the beam alignment and operation with the vehicle's xenon ballast active.

Recommendations

Use this bulb only in vehicles specified for D1S xenon lamps and with compatible xenon ballasts. Replace bulbs in pairs if recommended by the vehicle manufacturer to ensure even light output and color balance. Dispose of used xenon lamps according to local electronic waste regulations and avoid direct contact with the glass surface to preserve lamp life.