Kia Niro License Plate Bulb Size

Additional Notes

• The Kia Niro uses two distinct license plate bulb sizes across its model years, with the 2017-2020 models specifying the 168 bulb and the 2021-2024 models specifying the 12961 bulb.
• Both bulb types share the T10 miniature wedge form factor, meaning they are physically similar in shape and general size classification.
• Despite the shared T10 form factor, the 168 and 12961 bulbs differ in their base type. The 12961 uses a W2.1x9.5d base, which is a specific wedge base standard, while the 168 follows the ANSI standard used across the United States and Canada.
• The two bulbs also differ slightly in wattage. The 12961 is rated at 5W, while the 168 is rated at 4.9W. Both operate on a 12V electrical system.
• The 12961 is a Philips part number rather than a universal industry standard designation, meaning it is a manufacturer-specific reference tied to Philips product lines.
• The 168 designation is an ANSI standard number, which means it is a cross-brand specification recognized by multiple bulb manufacturers in North American markets.
• Because the 12961 and 168 carry different base specifications despite both being T10 bulbs, substituting one for the other without confirming base compatibility with the socket could result in an improper fit.
• The Kia Niro license plate position uses low-wattage miniature bulbs in both generations, consistent with the small illumination area typical of rear license plate lamp housings.