Kia Soul brake bulbs utilize 2357 and P21/5W sizes, while the center high mount stop light requires 12961 and 168 bulb sizes. The replacement chart covers vehicle production years spanning 2010 to 2024.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 2357 bulb is the most frequently specified brake bulb size across the Kia Soul lineup, appearing in the brake light position for the 2010-2019 and 2021-2024 model years.
The 2357 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with filaments drawing 26.9W and 8W respectively, and it follows the ANSI standard used in the United States and Canada.
The 2020 Kia Soul brake light position specifies the P21/5W instead of the 2357. Although both bulbs share the BAY15d bayonet base, the P21/5W follows the ECE standard and carries a 21W/5W filament rating, making it a distinct specification from the ANSI 2357.
Because the 2357 and P21/5W share the same BAY15d base type, physical fitment between the two is possible, but their differing wattage ratings and regulatory standards mean they are not confirmed interchangeable across these specifications.
For the 2014-2019 model years, the brake light specification of 2357 carries a "Without Projector-Type Headlamps" condition, indicating that the trim or headlamp configuration of the vehicle is a relevant fitment factor.
The center high mount stop light (CHMSL) position uses two distinct bulb types across the Soul's model years: the 168 for 2010-2019 and the 12961 for 2020-2024.
The 168 is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W, with a W2.1x9.5d base.
The 12961 is a Philips part number designating a miniature wedge bulb also in the T10 form factor with a W2.1x9.5d base, rated at 12V and 5W, making it a close but not identical match to the 168 in wattage.
The shared T10 form factor and W2.1x9.5d base between the 168 and 12961 means physical fitment between the two is possible, though the specifications treat them as separate part numbers for their respective model year groups.
The 2019 CHMSL specification of 168 also carries the "Without Projector Headlamps" condition, consistent with the headlamp-dependent fitment notes seen in the brake light position for that same year.