The Nissan TITAN side marker utilizes a 12961 bulb size for the exterior lighting system on the vehicle. Available information covers the range from 2004 through 2019 for the specified automotive component.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Nissan TITAN front side marker position uses two distinct bulb types across its model years: the 194 for 2004-2015 and the 12961 for 2017-2024, making these two types the most represented in the specifications.
The 194 is an ANSI-standardized miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W, and it serves as the front side marker bulb across twelve model years of the TITAN.
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, representing a higher wattage output than the 194 despite sharing the same T10 form factor.
Although the 194 and 12961 are both T10 wedge bulbs, their wattage ratings differ at 3.78W and 5W respectively, and the 12961 carries a manufacturer-specific part number rather than an ANSI standard designation, which are relevant factors in fitment decisions for the Nissan TITAN front side marker.
The 3157 is an ANSI-standardized dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W/7W split across its two filaments, and it is physically and electrically distinct from the T10 bulbs used in the front side marker position.
The rear side marker position on the Nissan TITAN uses the 3157 bulb for 2011-2015, and its dual-filament design means it supports two separate brightness levels within a single housing.
The T25 form factor of the 3157 is larger than the T10 form factor shared by the 194 and 12961, meaning rear and front side marker bulbs on the TITAN are not interchangeable by physical fit alone.
The W2.1x9.5d base specification on the 12961 refers to a wedge-type base with a 2.1mm wire width and 9.5mm pin spacing, which is the standard base configuration for T10 miniature wedge bulbs.