Koito D4S HID Xenon Headlight Bulb

The Koito D4S is an OEM-quality HID (High Intensity Discharge) xenon headlight bulb designed for vehicles equipped with factory xenon lighting systems. Koito is a leading Japanese manufacturer that supplies original equipment lighting to major automotive manufacturers worldwide, ensuring precise fit and reliable performance.

Key Features:

• D4S bulb design with integrated igniter for projector-style headlight assemblies
• 4,200K color temperature produces bright white light output
• 35-watt power consumption for efficient operation
• Mercury-free xenon gas capsule meets environmental standards
• 3,200 lumens typical light output for excellent visibility
• Direct OEM replacement for factory D4S xenon bulbs
• Rated for approximately 2,000-2,500 hours of service life

The D4S designation indicates this is a shielded design bulb (the "S" denotes shielded) intended for use in projector-style headlight housings with integrated igniter. This bulb is not compatible with D4R reflector-style housings. HID xenon bulbs provide significantly brighter illumination compared to traditional halogen bulbs while consuming less power and generating less heat.