Dodge Viper front side marker bulbs use 12961 or 194 size, while rear side marker bulbs use 194, 3057, or 3157 size configurations. The replacement chart covers 1992 through 2010 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Dodge Viper front side marker uses two distinct bulb types across its production span: the 194 for model years 1992-2002, and the 12961 for model years 2003-2010, with the exception of 2007, which is not listed in the specifications.
The 194 and 12961 are both T10 miniature wedge bulbs sharing the same physical form factor, yet they are not electrically identical. The 194 is rated at 3.78W while the 12961 operates at 5W, meaning the two are not direct drop-in replacements for one another despite their shared housing type.
The 12961 is a Philips-branded part number rather than an ANSI industry standard designation. It uses a W2.1x9.5d base and is rated at 12V, 5W.
The 194 carries an ANSI standard designation recognized in both the United States and Canada, and it operates at 12V with a power draw of 3.78W through a wedge-type base.
The rear side marker of the Dodge Viper uses three different bulb types depending on the model year. The 3157 is specified for 1993-2002, the 3057 for 2003-2004, and the 194 for 2005-2006 and 2008-2010.
The 3057 and 3157 are both ANSI-standard dual-filament T25 wedge bulbs rated at 12V with a 27W high filament and 7W low filament. Their shared wattage ratings indicate functionally similar output, though they are distinct part numbers and may differ in base indexing or filament positioning.
The use of a dual-filament bulb such as the 3157 or 3057 in a side marker position suggests those rear housings on the Viper were wired to serve a combined marker and brake or turn signal function during those model years.
The rear side marker transitioned from the dual-filament 3157 to the single-filament 194 between the 2004 and 2005 model years, indicating a change in the rear lighting circuit or housing design at that point in the Viper's production.
The front side marker of the Dodge Viper (2003-2010) uses the 12961, which shares the T10 wedge form with the 194 used in the rear marker for the same period, but the two positions are not interchangeable due to the wattage difference.
The 1992 model year is listed only for the front side marker with a 194 bulb, while rear side marker data in the specifications begins at 1993.