BlueBird BLB9003 Dual-Beam Headlight Bulb H4 9003

The BlueBird BLB9003 is a dual-beam headlight bulb designed to provide both high and low beam functions in a single unit. This versatile 9003/H4 type bulb features a dual-filament design that switches between high and low beams, making it a practical choice for automotive, motorcycle, and commercial vehicle applications.

Key Features:

• Dual-beam functionality with both high and low beam filaments in one bulb
• 9003/H4/HB2 compatible - interchangeable designations for the same bulb type
• Standard P43t base for secure fitment
• Typical output of 55W low beam and 60W high beam for halogen versions
• Direct replacement for factory 9003 or H4 bulbs
• Wide vehicle compatibility across cars, trucks, motorcycles, and commercial vehicles

The 9003 designation is commonly used in North America, while H4 is the European equivalent. Both share identical dimensions and electrical specifications, ensuring reliable performance and straightforward installation. This bulb type has been widely used since the 1970s and remains popular for its proven reliability and dual-beam convenience.