Xenon HID Ballast Driver for BMW 3 Series 63126948180
Restore consistent headlight illumination with this 12V 35W D1S Xenon HID ballast driver. Engineered as a direct aftermarket replacement for failing original units, this control module stabilizes high-voltage arc ignition and regulates power delivery to prevent flickering, delayed starting, or premature bulb burnout. Compatible with OEM number 63126948180, it drops into existing housing without harness modifications while maintaining factory-level projector lens performance.
Benefits & Practical Tips
- Cross-reference exact markings such as W3T13271, 626.11.104.99, or 30744459 before purchase, as D1S variants differ between market revisions.
- Replace this ballast when headlights take more than three seconds to reach full brightness, especially during colder months when ignition delay increases.
- Inspect socket pins and grounding wires before installation; voltage drop from corroded contacts often mimics actual ballast failure.
Technical Specifications
D1S semi-socket architecture | Operating voltage: 12V DC | Power rating: 35W | Matches OEM identifiers: 63 12 6 948 180, 6 948 180, 6948180, 30744459-6 | Direct fitment for BMW 3-Series (E90 sedan/E91 wagon) 2006–2008. Cross-compatible with specific Mitsubishi chassis and Volvo S80, V70, and XC70 models manufactured between 2007–2015.
Package Includes:
- One (1) D1S Xenon HID Ballast Driver
Safety & Installation Notes
This item serves as a non-genuine replacement part designed to replicate factory electrical characteristics. Step-by-step fitting instructions are not provided; qualified automotive technicians should handle removal, connector mating, and reassembly. Disconnect the vehicle battery prior to any wiring work to avoid short circuits or ECM interference.
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