Toyota Tacoma Side Marker Bulb Size

The Toyota Tacoma side marker requires a 194 bulb size for the specific lighting components located on the exterior of the vehicle. Data for 2021 through 2023 provides the specific information regarding the required components for the specified time period.

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

Front Side Marker

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2021-2023	12961	12961	Check Price
2018	12961	12961	Check Price
1995-2004	168	W5W	Check Price

Rear Side Marker

Years	US Type	EU Type	Shop
2021-2023	7443	W21/5W	Check Price
2018	7443	W21/5W	Check Price
2012-2015	3157 (Without LED Tail Lights)	P27/7W	Check Price
2008	3157 (To 05/2008)	P27/7W	Check Price
2006-2007	3157	P27/7W	Check Price
2005	3157 (From 09/2004)	P27/7W	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price
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 (T20). 12V, 21W/5W.	7443	Check Price
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157	Check Price

Other Locations

Additional Notes

The front side marker position on the Toyota Tacoma uses two distinct bulb types across its model years: the 12961 for 2021-2023 and the 168 for 1995-2004, with both belonging to the T10 wedge family and sharing the same 12V operating voltage.
The 12961 is a Philips part number rather than an ANSI industry standard designation. It uses a W2.1x9.5d base and is rated at 5W, making it a proprietary reference for what is otherwise a standard T10 wedge form factor.
The 168 is an ANSI-standardized bulb rated at 4.9W. Although it shares the T10 wedge form factor with the 12961, the two are not specified interchangeably in these fitment records, and the base designation of the 12961 (W2.1x9.5d) should be confirmed against the socket before substitution is attempted.
The rear side marker position on the Toyota Tacoma uses the 7443 for 2018-2023. This is a dual-filament T20 wedge bulb rated at 21W and 5W across its two filaments, which is a notably higher wattage than the front side marker bulbs used on the same model years.
The 3157 appears in the rear side marker position for 2005-2015 model years. It is a dual-filament T25 wedge bulb rated at 27W/7W, making it the highest-wattage bulb among all positions listed in these specifications.
The 3157 and 7443 are both dual-filament wedge bulbs but belong to different size classes, T25 and T20 respectively, and are not physically interchangeable despite serving the same rear side marker function across different Tacoma generations.
For the 2015 Tacoma (Toyota Tacoma), the 3157 rear side marker fitment carries a conditional note specifying it applies only to vehicles without LED tail lights, indicating that the trim level or factory lighting package affects bulb socket compatibility in that position.
The 2008 rear side marker fitment is restricted to vehicles produced up to May 2008, and the 2005 fitment applies from September 2004, reflecting mid-cycle production changes that affect which bulb size is correct within those calendar years.