OSRAM D1S Xenarc Original HID Bulb 66140 — 35W D1S Xenon, 4500K Daylight, OEM German-made

The OSRAM D1S Xenarc Original (66140) is a 35W xenon HID replacement lamp built to OEM standards for brighter, whiter headlight illumination.

Designed as original-equipment and authorized spare parts, this OSRAM Xenarc D1S lamp delivers a high color temperature close to daylight and reliable performance over extended periods. Manufactured in Germany, each bulb carries traceable security features so you can confirm authenticity through OSRAM’s online Trust Program. These lamps are compatible with vehicles that require D1S-type xenon discharge lamps and are commonly fitted by major automakers as factory equipment.

How does this bulb improve on standard halogen headlights?

The D1S Xenarc produces a much higher color temperature and a cleaner white light compared with typical halogen bulbs, improving perceived contrast and road detail at night without changing beam pattern. Its discharge technology yields a more intense output for the same power draw (35W).

• Approximately 4,500 K color temperature for whiter light
• Higher luminous intensity versus comparable halogen bulbs
• Same vehicle beam pattern when used in proper xenon headlamp systems
• OEM-grade manufacturing for consistent performance

What authentication and anti-counterfeit measures are included?

OSRAM embeds multiple security elements on each Xenarc D1S package so buyers can verify authenticity before installation. The label includes both a numeric code and visual holographic and microtext features to make copying difficult.

• Unique 7-digit label code for online verification
• Hologram showing the last three digits of the label code
• QR code linking to OSRAM’s Trust Program verification page
• Security strip with microtext readable under magnification

What vehicle and installation considerations should I know?

This D1S lamp is intended for xenon HID headlamp systems specified by the vehicle manufacturer; it is not a universal fit for halogen sockets. Proper handling is important — avoid touching the glass and follow your vehicle’s service guide or a professional installer’s instructions.

• Fits vehicles specifying D1S 35W xenon bulbs
• Do not touch the glass envelope to prevent contamination
• Replace bulbs in pairs where possible to maintain balanced output
• Refer to vehicle manual or a trained technician for installation

Who is this for: The OSRAM Xenarc D1S 66140 is intended for drivers seeking a factory-grade xenon replacement that replicates original equipment performance. It suits owners of vehicles that require D1S HID bulbs and anyone who prefers verifiable, German-made components with anti-counterfeit safeguards. Choose this lamp if you need a direct, quality replacement built to the standards used by major automakers.