The Big Dog Pitbull high beam and low beam headlight bulbs both utilize a 9003 size. The replacement chart covers 2010 to 2011 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 is the most prominent bulb type in these specifications, appearing across both high beam and low beam headlight positions for the Big Dog Pitbull in 2010-2011.
The 9003 is a dual-filament halogen bulb, meaning a single unit contains two separate filaments to handle both high and low beam functions independently.
The 9003 operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The 9003 uses a P43t base, which is a standardized bayonet-style fitting that determines physical socket compatibility.
The 9003 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of performance and dimensional requirements under North American standards.
Because the 9003 serves both the high beam and low beam positions in the Pitbull, a single bulb type fulfills the entire headlight system for these model years.