Introduction
This manual provides essential information for the installation, operation, and maintenance of your OSRAM D8S 25W OEM HID Xenon Headlight Bulbs. These bulbs are designed to deliver reliable performance and a light output closer to natural daylight, enhancing visibility and driving safety. Please read these instructions carefully before proceeding with installation or use.
Product Overview
The OSRAM D8S 25W HID Xenon headlight bulb is an original equipment manufacturer (OEM) quality replacement part. It operates at 25 watts and produces a 4300 Kelvin white light, which is characteristic of natural daylight. This design ensures optimal illumination for various driving conditions.

Image: OSRAM D8S 25W HID Xenon Headlight Bulb with integrated ballast.
Compatibility
These OSRAM D8S bulbs are compatible with specific vehicle models. Please verify your vehicle's requirements before installation. Compatible models include:
- 2012-2017 Audi A1
- 2012-2017 Audi S1
- 2010-2017 VW Amarok
- 2011-2017 VW Beetle
- 2013-2016 VW Beetle Cabrio Convertible
- 2015-2018 VW Caddy
- 2015-2018 VW Touareg
- 2012-2016 Ford Focus
- 2015-2017 Ford Mustang
Refer to your vehicle's owner's manual or a qualified technician to confirm compatibility and proper part numbers (e.g., MPN: 8R0 941 235, N10815201).
Setup and Installation
Safety Precautions:
- Always disconnect the vehicle's battery before beginning any electrical work.
- HID bulbs operate at high voltage. Exercise extreme caution.
- Avoid touching the glass portion of the bulb with bare hands. Oils from your skin can create hot spots and reduce bulb lifespan. Use clean gloves or a lint-free cloth.
- Professional installation is recommended due to the high voltage and specific handling requirements of HID systems.
Installation Steps:
- Access Headlight Assembly: Locate and access the headlight housing in your vehicle. This may require removing other components depending on your vehicle model.
- Remove Old Bulb: Carefully disconnect the electrical connector from the existing bulb. Unclip or twist to remove the old D8S bulb from its socket.
- Prepare New Bulb: Handle the new OSRAM D8S bulb by its base. If the retaining ring feels tight, gently rotate it around the bulb's base a few times to ensure smooth reinstallation.
- Insert New Bulb: Align the new bulb with the headlight socket and insert it firmly. Ensure it is seated correctly and secured with any clips or twists.
- Connect Electrical: Reconnect the electrical connector to the new bulb. Ensure a secure connection.
- Test Functionality: Reconnect the vehicle's battery and test the headlights before fully reassembling the vehicle components.

Image: Two OSRAM Xenarc electronic D8S bulb bases, showing the integrated electronic component.
Operating Instructions
OSRAM D8S HID Xenon bulbs operate by creating an electrical arc between two electrodes within a gas-filled capsule. This process generates intense light.
- Warm-up Period: Upon activation, HID bulbs require a short warm-up period to reach their full brightness and color temperature. During this time, the light may appear slightly warmer (more yellow) before settling into its intended 4300K white output. This is normal operation.
- Color Temperature: The 4300K color temperature provides a bright, white light that closely mimics natural daylight, offering excellent road visibility without being overly blue or harsh.

Image: Two OSRAM D8S HID Xenon headlight bulbs in operation, demonstrating their light output.
Maintenance
- Cleaning: If the bulb's glass surface becomes dirty, gently wipe it with a clean, dry, lint-free cloth. Do not use abrasive cleaners or solvents.
- Replacement: HID bulbs have a long lifespan, but they will eventually dim or change color over time. It is recommended to replace both headlight bulbs at the same time to ensure consistent light output and color matching.
- Handling: Always handle bulbs by their base. Avoid touching the glass envelope to prevent contamination and potential damage.
Troubleshooting
- Bulb Not Lighting:
- Check all electrical connections to ensure they are secure.
- Verify the vehicle's fuse for the headlight circuit.
- Ensure the bulb is correctly seated in its socket.
- If only one bulb is out, the bulb itself or its integrated ballast may be faulty.
- Flickering Light:
- Flickering can indicate a loose connection or a failing integrated ballast.
- It can also be a sign that the bulb is nearing the end of its operational life.
- Dim or Uneven Light Output:
- Ensure both bulbs are of the same age and type. Replacing bulbs in pairs helps maintain even light.
- Check for any obstructions or dirt on the headlight lens.
- Color Mismatch:
- New HID bulbs may have a slight color variation during their initial warm-up period.
- If only one bulb was replaced, a slight color difference between the new and old bulb is normal due to aging.
If troubleshooting steps do not resolve the issue, consult a qualified automotive technician.
Specifications
| Brand | OSRAM |
| Model Number | D8S |
| Light Source Type | Xenon |
| Wattage | 25 watts |
| Voltage | 12 Volts |
| Color Temperature | 4300 Kelvin |
| Color | White |
| Item Weight | 7 ounces |
| Package Dimensions | 4.88 x 4.06 x 2.52 inches |
Warranty
OSRAM products are manufactured to high-quality standards. For specific warranty information regarding your D8S HID Xenon bulbs, please refer to the documentation included with your purchase or visit the official OSRAM website. Warranty terms typically cover manufacturing defects under normal use conditions.
Support
For technical assistance, product inquiries, or warranty claims, please contact OSRAM customer support through their official channels. You can also visit the OSRAM Store on Amazon for additional product information and resources.





