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Osram D4S 66440CBA-HCB Cool Blue Advance HID Xenon Headlight Bulbs | Pack of 2
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Osram D4S 66440CBA-HCB Cool Blue Advance HID Xenon Headlight Bulbs | Pack of 2
Up to 6000K Light Output with High-Contrast Visibility and OSRAM Advanced Xenon Technology Upgrade your vehicle’s lighting appearance
Designed for drivers seeking a more modern, high-end lighting aesthetic, these 35W xenon bulbs deliver an impressive light effect of up to 6000K while maintaining compatibility with factory D4S projector headlamp systems. Built using OSRAM’s advanced xenon technology, this series focuses on enhanced visual styling and improved color perception compared to standard OEM xenon bulbs. As a direct plug-and-play replacement, this mercury-free pair is ideal for drivers upgrading from factory HID lighting to a more contemporary 6000K color temperature.
Key Features & Benefits
- Up to 6000K Light Output: Produces a striking light effect of up to 6000K for a modern, high-end headlight appearance.
- OSRAM Cool Blue Advance Xenon Technology: Engineered to deliver a higher color temperature light output compared to standard factory xenon bulbs.
- D4S Projector Compatibility: Designed specifically for use in factory D4S projector headlamp systems with precise optical alignment.
- High-Contrast Night Visibility: Enhances perceived road clarity and object definition compared to aging or standard OEM HID bulbs.
- Direct OEM Fitment: Built with the standardized P32d-5 base for straightforward plug-and-play installation in compatible HID systems.
- Stable 35W Xenon Operation: Maintains OEM-level electrical compatibility with factory HID ballasts for reliable performance.
- OSRAM Authentic Product: Manufactured by OSRAM under strict quality standards for automotive xenon lighting systems.
- Pack of 2: Includes a matched pair to ensure consistent color appearance and balanced lighting across both headlights.
Note: Due to their specific high-output color temperature, these bulbs are intended for off-road use and are not ECE-approved for public roads in certain regions.
Compatible Manufacturer Part Number
Honda: 33116-SZT-G01
Mazda: 9070-39-350
Subaru: 84920CA000
Toyota: 90981-20013, 90981-20018, 90981-20020, 90981-20024
Lexus: 90981-20019, 90981-20021, 90981-20027, 90981-20028
Technical Specs
| Size | D4S |
| Base | P32d-5 |
| Technology | HID (Xenon) |
| Color temp. (K) | Up to 6000K |
| Lumens (lm) | 3200lm ±15% |
| Voltage | 42V |
| Wattage | 35W |
| Manufacturer part number (MPN) | 66440CBA-HCB |
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For International customers:Please be aware that your country may charge you customs duties, taxes, and brokerage fees on importing goods on certain products. We are not responsible for any customs or duty taxes that your country’s government agency may charge on your merchandise. We advise you to consult your local government import office with any questions.
Return
We will accept returns for a refund or exchange on products in NEW/ unopened condition with the UNOPENED original package within 30 days of delivery. All returns without an exchange are subject to a 15% restocking fee without exception. The customer would be responsible for return shipping unless the reason for the return was our mistake which we will send you the pre-paid shipping label for. Your original shipping cost will be deducted from the refundable amount if you use the promotional free shipping code. All refunds must be issued back to the original payment method. We will NOT be able to process your return if your RMA number is not included with your product. Please allow 2-3 business days for us to process the return upon receipt.
We reserve the right to deny/ refuse the return if your return does not meet the criteria stated above.
Exchange
Product may be exchanged if they are in NEW/ unopened condition with the UNOPENED original package within 30 days of delivery. Customer is responsible for shipping cost to and from our warehouse unless exchange is required by our mistake which we will cover all the shipping costs. You will not be able to re-use any promotional free shipping code if you have already used them on your original purchase.
Refund
Please allow 2-3 business days for us to process your refund once we receive your returned product. We will not issue the refund if your returned product does not meet the criteria we have stated on our return policy. Please note that there is a 15% restocking fee unless you are returning your product for an exchange.

