Koito 9003 H4 HB2 Halogen Headlight Bulb 12V 60/55W

The Koito 9003 is a premium dual-beam halogen headlight bulb manufactured by Koito Manufacturing Co., Ltd., a trusted OEM supplier for Japanese automotive manufacturers. This replacement bulb is also known by its alternate designations H4 and HB2, all referring to the same dual-filament headlight bulb specification.

Key Features:

• Dual-filament design provides both high beam (60W) and low beam (55W) functions in a single bulb
• 12-volt operation with P43t base for secure mounting
• OEM-quality construction ensuring long-lasting performance and reliability
• Clear glass lens for optimal light transmission and brightness
• Approximately 3200K color temperature producing warm white light
• Direct replacement for factory-installed bulbs in many Honda, Toyota, Acura, and other Japanese vehicles

Koito is known for producing high-quality lighting components that meet or exceed original equipment standards. The 9003/H4/HB2 bulb features a two-filament halogen design that was first introduced in Europe in 1971 and has since become one of the most widely used automotive headlight bulb types worldwide. This bulb provides reliable illumination with consistent beam patterns for both high and low beam applications.