The 9007 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to produce both high and low beam output from one housing position.
The Pontiac G5 uses the 9007 bulb for both the high beam and low beam headlight functions across the 2007-2009 model years.
Because the 9007 serves both beam functions, the high beam and low beam headlight positions on the G5 share the same bulb type rather than using separate single-filament bulbs for each function.
The 9007 operates on a 12-volt electrical system and draws 65 watts on the high beam filament and 55 watts on the low beam filament.
The 9007 uses a PX29t base, which is a specific bayonet-style connector configuration. Bulbs with different base types are not physically interchangeable with this socket.
The 9007 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning its electrical and physical specifications conform to a defined industry standard rather than being proprietary to a single manufacturer.
The 9007 is sometimes confused with the 9004 bulb, which shares a similar dual-filament design but has a different wattage rating and an incompatible base configuration, making the two non-interchangeable.