Toyota 4Runner Parking Light Bulb Size

Additional Notes

• The Toyota 4Runner front parking light uses three distinct bulb families across its model history: the T20 wedge (7444NA and 7443NA), the T10 miniature wedge (168, 168NA, 12961), and the T10 miniature wedge rated at a lower wattage (194). Each family represents a different physical and electrical specification, meaning bulbs from one family are not interchangeable with those from another.
• The 7444NA is a dual-filament T20 wedge bulb rated at 12V with a 21W high filament and a 5W low filament. Its natural amber glass produces the amber color required for parking light applications without the use of a tinted lens or colored coating.
• The 7443NA shares the same T20 wedge form, dual-filament design, 12V rating, and 21W/5W output as the 7444NA. The two bulbs differ in their base configuration, which affects physical fitment even though their electrical output is identical.
• The Toyota 4Runner (2016-2024) uses the 7444NA for the front parking light, while the 2014-2015 and 2018 model years use the 7443NA. The 2016 and 2019-2024 model years use the 7444NA. Substituting one for the other without confirming base compatibility risks an improper fit.
• The 168 is a single-filament T10 miniature wedge bulb rated at 12V and 4.9W. It is an ANSI-standardized size widely used in low-intensity automotive lighting positions such as parking lights and side markers.
• The 168NA is the natural amber glass variant of the 168 bulb, sharing the same T10 form factor, 12V rating, and 4.9W output. The Toyota 4Runner used the 168NA specifically for the 2006-2007 model years, distinguishing those years from surrounding years that used the clear-glass 168.
• 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 Toyota 4Runner (1997-2002) used this bulb for the front parking light. Its wattage of 5W is slightly higher than the 4.9W of the 168, and it is identified by a manufacturer part number rather than an ANSI standard designation.
• The 194 is a single-filament T10 miniature wedge bulb rated at 12V and 3.78W, making it the lowest-wattage bulb in the 4Runner front parking light specifications. It was used across the 1984-1989 model years and again in 1992. Although the 194 shares the T10 form factor with the 168, its lower wattage means the two are not electrically equivalent.
• The T10 bulb family (168, 168NA, 12961, and 194) spans the majority of the 4Runner's model history for the front parking light position, covering 1984-2013. Despite sharing the same general T10 form factor, the wattage and base variations within this group mean that not all T10 bulbs in these specifications are direct substitutes for one another.
• A transition from T10-based bulbs to T20-based dual-filament bulbs occurred between the 2013 and 2014 model years of the Toyota 4Runner front parking light position. The shift from a single-filament 4.9W T10 to a dual-filament 21W/5W T20 represents a significant change in both physical size and electrical load.