Scion xD Side Marker Bulb Size

Scion xD front side marker bulbs measure 192 and 168 in size, while rear side marker bulbs measure 7443, with specifications detailed across multiple bulb configurations. The replacement chart covers vehicle production spanning 2008 to 2014, documenting bulb size data for side marker applications throughout the model generation.

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
2013-2014	192	192	Check Price
2008-2012	168	W5W	Check Price

Rear Side Marker

Years	US Type	EU Type	Shop
2008-2014	7443	W21/5W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.	192	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

Other Locations

Additional Notes

The Scion xD front side marker uses two different bulb sizes depending on the model year. The 2008-2012 model years use the 168 bulb, while the 2013-2014 model years use the 192 bulb. These two bulbs are not interchangeable despite sharing the same T10 wedge base, as they differ in wattage.
The 168 bulb is an ANSI-standard miniature wedge type rated at 12V and 4.9W. Its T10 wedge base is a common format in automotive lighting, designed to seat without a separate socket locking mechanism.
The 192 bulb is also an ANSI-standard T10 miniature wedge type but is rated at a lower 3W output compared to the 168. The shared base style between these two bulbs can create a risk of incorrect substitution if wattage ratings are not verified before installation.
The rear side marker position on the Scion xD uses the 7443 bulb across all model years from 2008-2014, making it the only specification in this dataset that remained unchanged throughout the entire production run covered.
The 7443 is an ANSI-standard dual-filament wedge bulb with a T20 base, rated at 12V with a 21W high filament and a 5W low filament. The dual-filament design allows a single bulb to serve two distinct lighting functions within one housing.
The T20 base of the 7443 is physically larger than the T10 base used by the 168 and 192 front side marker bulbs. This size difference means rear and front side marker bulbs on the Scion xD are not cross-compatible with each other.