The Pontiac Vibe front side marker requires a 1157NA or 1034NA bulb size, while the rear side marker uses a 7443 bulb size. The replacement chart covers 2003 to 2008 model 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 Pontiac Vibe uses three bulb types across its front and rear side marker positions: the 1157NA, 1034NA, and 7443, all of which are dual-filament designs rated at 12V with a 21W/5W output.
All three bulb types conform to ANSI standards applicable in both the United States and Canada.
The 7443 is a T20 wedge-base bulb, meaning it uses a push-in wedge fitting rather than a twist-lock bayonet base. It serves as the rear side marker bulb across all model years covered in the specifications.
The 1157NA and 1034NA both use a BAY15d bayonet base with natural amber glass, making them visually similar in construction. The 1034NA is classified as a variant of the 1157NA.
Despite their close relationship, the 1157NA and 1034NA are listed as distinct part numbers in the specifications, and their use is not interchangeable across all model years of the Pontiac Vibe front side marker position.
The front side marker on the 2003 and 2008 Pontiac Vibe takes the 1157NA bulb, while the 2004-2007 model years use the 1034NA instead.
The natural amber glass on both the 1157NA and 1034NA produces a color output without relying on a tinted lens or colored coating, as the amber tint is built into the glass envelope itself.
The dual-filament design of all three bulb types allows a single bulb to serve two brightness levels, typically a lower-intensity running or parking function alongside a higher-intensity signaling function.