Shop Audi A4 Headlight Bulbs. Find Audi A4 Headlight bulb replacement & Audi A4 Front light bulb. Get Audi A4 Headlamp light bulbs. Order Audi A4 front light bulbs. Maintaining the headlight bulbs of your Audi A4 is crucial for safety and visibility. To ensure longevity, avoid touching the bulb glass during installation, as oils from your skin can shorten its life. Watch for dimming or flickering lights, which signal the need for replacement. When choosing new bulbs, consider LED options for their energy efficiency and halogens for brightness. Always opt for high-quality materials to ensure durability and check compatibility with your A4 model for a seamless installation process. Proper maintenance and the right choice will enhance your night-time driving experience with clear, reliable illumination.