Toyota Highlander Side Marker Bulb Size

The Toyota Highlander side marker requires a 194 bulb size for the specific lighting components located on the exterior of the vehicle. Data for the specified bulb covers the range from 2021 to 2024.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Side Marker

Years	US Type	EU Type	Shop
2014-2022	168	W5W	Check Price
2011-2013	3457NA	PY27/7W	Check Price
2001-2007	1157	P21/5W	Check Price

Rear Side Marker

Years	US Type	EU Type	Shop
2008-2016	7443	W21/5W	Check Price
2001-2005	168	W5W	Check Price

Side Marker

Years	US Type	EU Type	Shop
2023-2024	194	W5W	Check Price
2020-2021	194	W5W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W.	W5W	Check Price
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.	3457NA	Check Price
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W	Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157	Check Price
ANSI standard (US & Canada). Dual-filament wedge bulb (T20). 12V, 21W/5W.	7443	Check Price
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194	Check Price

Other Locations

Additional Notes

The 168 bulb is among the most frequently specified sizes across the Toyota Highlander's side marker positions. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W, and it appears in the front side marker position across the 2014-2022 model years as well as the rear side marker position for 2001-2005.
The 194 bulb shares the same T10 wedge form factor as the 168 but draws slightly less power at 3.78W versus 4.9W. Both are ANSI-standard 12V bulbs, and while they occupy the same physical socket type, the wattage difference means they are not always interchangeable without confirming the housing's rated tolerance.
The 7443 is a dual-filament T20 wedge bulb rated at 12V with a 21W main filament and a 5W secondary filament. Its dual-filament design means it serves two lighting functions within a single bulb, and it is specified for the Toyota Highlander's rear side marker across the 2008-2016 model years.
The 3457NA is a dual-filament T25 wedge bulb with natural amber-tinted glass, rated at 12V with filaments at 27W and 7W. The amber glass produces a colored output without relying on a tinted lens, and it is specified for the front side marker on the 2011-2013 Highlander.
The P21/5W follows the ECE standard rather than the ANSI standard used by all other bulbs in these specifications. It uses a BAY15d bayonet base, which is physically distinct from the wedge bases of the ANSI types, making it incompatible with sockets designed for wedge-style bulbs. It is rated at 12V with filaments at 21W and 5W, and it is specified for the front side marker on the 2001-2007 Highlander.
A fitment boundary exists at the front side marker position between the 2013 and 2014 Toyota Highlander. The 2011-2013 years use the 3457NA, a dual-filament T25 bulb, while the 2014-2022 years use the 168, a single-filament T10 bulb. These two types differ in filament count, wattage, and physical size, so they are not interchangeable across that boundary.
A separate fitment boundary exists at the rear side marker position between the 2016 and 2020 Highlander. The 2008-2016 years use the 7443, a dual-filament T20 wedge bulb, while the 2020-2021 and 2023-2024 years use the 194, a single-filament T10 wedge bulb. The difference in filament count and body size makes these two types incompatible with each other's sockets.
The rear side marker specifications for the 2022 Toyota Highlander are not present in the provided data, while the front side marker specifications do not include entries for 2008-2010 or 2017-2024 rear positions, reflecting the scope of the data as supplied rather than any assumption about those model years.