The Dodge St. Regis front and rear side marker bulb size is 168 for this vehicle model. The replacement chart covers 1979 to 1981 production years with bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 168 bulb is the sole bulb size specified for the Dodge St. Regis across all listed model years and positions.
The 168 bulb follows the ANSI standard recognized in both the United States and Canada.
It is a miniature wedge-type bulb, classified under the T10 form factor, which refers to a tubular bulb body roughly 10 eighths of an inch wide.
The wedge base design means the bulb is held in place by the socket contacts gripping the glass pinch at its base, with no separate metal base or bayonet pins involved.
The 168 operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this era.
Its rated power draw is 4.9 watts, placing it in the low-wattage category typical of marker and courtesy lighting applications.
The Dodge St. Regis (1979-1981) uses the same 168 bulb size for both the front and rear side marker positions, meaning the two positions share a common bulb specification.
Because the front and rear side marker sockets accept the same bulb, a single replacement part number covers both positions on the vehicle.