Dodge Viper Back Up Light Bulb Size

Additional Notes

• The 3157 and 3057 are both ANSI-standardized bulb types recognized across the United States and Canada, meaning they conform to established electrical and physical standards for automotive lighting applications.
• Both bulb types share the T25 wedge form factor, a designation that refers to the shape and size of the bulb base, which allows for tool-free insertion into compatible sockets.
• Each bulb operates on a 12-volt electrical system, consistent with the standard voltage found in conventional passenger vehicle electrical systems.
• Both the 3157 and 3057 are dual-filament bulbs, meaning each contains two separate filaments within a single housing, typically serving two distinct brightness levels or functions within the same socket.
• The wattage rating for both types is 27W/7W, where the higher filament handles the brighter output and the lower filament handles a reduced-intensity function, though in a backup light application only one filament is typically active.
• The Dodge Viper (1992-2002) and (2008-2010) model years use the 3157 bulb for the backup light position.
• The 3057 bulb is specified for the Dodge Viper across the 2003-2006 model years.
• Despite sharing identical voltage and wattage ratings, the 3157 and 3057 are not confirmed interchangeable within these specifications, as differences in filament orientation between the two types can affect socket fitment and function.