The Mitsubishi Outlander side marker utilizes a 12961 bulb size for the exterior lighting system on the vehicle. Available information covers the specific period starting from 2007 through 2018 for the listed component.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi Outlander front side marker position uses the 12961 bulb across all model years listed in the specifications, spanning 2003-2020.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 form factor is a small tubular wedge-type bulb that seats without a separate metal base, relying on the wedge shape of its glass envelope to hold it in the socket.
The 168 is an ANSI standard designation recognized in the United States and Canada, also a T10 miniature wedge bulb, rated at 12V and 4.9W.
Although both the 12961 and 168 share the T10 wedge form factor, they carry different designations from different standards bodies, and their wattage values differ slightly at 5W and 4.9W respectively.
The Mitsubishi Outlander rear side marker position used the 12961 bulb for the 2003-2006 model years, then transitioned to the 168 bulb for the 2007-2013 model years.
The rear side marker specification does not extend beyond 2013, while the front side marker specification continues through 2020, meaning the two positions share no common specification window after 2013.
Because the 12961 carries a manufacturer-specific Philips part number rather than an ANSI designation, sourcing equivalent replacements may require cross-referencing it against the T10 W2.1x9.5d base standard to confirm socket compatibility.
The W2.1x9.5d base designation on the 12961 describes a wedge base with a 2.1mm wire contact width and a 9.5mm insertion depth, which defines the physical socket interface for that bulb.
Substituting a 168 for a 12961 in positions specified for the latter, or vice versa, involves a 0.1W wattage difference and potentially different manufacturer tolerances, even though both occupy a T10 wedge socket.