The Pontiac Ventura front and rear side marker bulbs both utilize a 194 bulb size. The replacement chart covers 1971 through 1977 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 Pontiac Ventura uses the 194 bulb for both its front and rear side marker positions across the 1971-1977 model years.
The 194 is an ANSI-standardized bulb recognized across the United States and Canada, operating at 12 volts with a power draw of 3.78 watts.
This bulb follows the T10 form factor, which refers to a miniature wedge-base construction. The wedge base relies on the glass envelope itself being pinched at the bottom to form the electrical contact, rather than using a separate metal base.
The T10 designation indicates the bulb body is 10 eighths of an inch wide, a sizing convention common to miniature automotive bulbs.
Because the 194 is an ANSI-standardized type, it is produced by multiple manufacturers to a shared specification, meaning units from different sources are generally interchangeable as long as the 194 designation is matched.
The identical 194 fitment across all seven model years and both the front and rear side marker positions means a single bulb type services all side marker sockets on any Ventura from this generation.