The Nissan Armada side marker utilizes a 12961 bulb size for illumination purposes within the lighting assembly. Data provided for the specific component covers the range from 2005 through 2015.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is an ANSI-standard miniature wedge type with a T10 form factor, rated at 12V and 3.78W. It serves as the front side marker bulb on the Nissan Armada across the 2005-2015 model years.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. It replaces the 194 as the front side marker bulb on the 2017-2018 Armada, which carries a Mirror label indicating a specific optical or finish characteristic.
Both the 194 and the 12961 share the T10 wedge form factor, though their wattage ratings differ. The 194 draws 3.78W while the 12961 draws 5W, meaning the two are not electrically identical despite their physical similarities.
The Mirror designation on the 12961 entries for the 2017-2018 Armada front side marker indicates a silvered or mirror-coated bulb, a construction style that conceals the filament when unlit while still transmitting colored light when illuminated.
The 3157 is an ANSI-standard dual-filament wedge bulb with a T25 form factor, rated at 12V with a 27W high filament and a 7W low filament. Its dual-filament design allows it to serve two brightness levels within a single housing.
The 3157 bulb is specified for the rear side marker position on the Armada for the 2011-2015 model years. Its dual-filament capability in a rear side marker application suggests the housing may serve a combined function, such as both a marker and a turn or brake signal role.
The T25 body of the 3157 is physically larger than the T10 body used by both the 194 and the 12961. The two form factors are not interchangeable, and a T10 bulb cannot substitute for a T25 socket or vice versa.
The W2.1x9.5d base noted for the 12961 is a wedge base standard defined by IEC specifications, and it is the same base type used by the 194. This base compatibility means both bulbs fit the same socket, though the difference in wattage and coating should be considered before substitution.