Lexus LS430 front and rear side marker bulbs use a 168 size bulb configuration for illumination purposes. The replacement chart covers 2001 through 2006 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus LS430 uses the 168 bulb for both front and rear side marker positions across the 2001-2006 model years.
The 168 is an ANSI-standardized bulb type, meaning its electrical and physical specifications are defined by a recognized North American industry standard applicable in the United States and Canada.
The 168 bulb is a T10 miniature wedge type, which refers to its wedge-shaped base that seats directly into a socket without a separate metal base or pins.
The T10 designation describes the bulb's tubular envelope width, expressed in eighths of an inch, placing it in the smaller end of the miniature wedge category.
The 168 operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger vehicles.
At 4.9 watts, the 168 draws a relatively low amount of power, which is typical for side marker applications where continuous illumination is expected during vehicle operation.
Because the Lexus LS430 uses the same 168 bulb in all four side marker positions, a single bulb type services the entire side marker system on the vehicle.
The T10 wedge format is shared by several bulb numbers in the miniature wedge family, though wattage and voltage ratings differ between them, making direct substitution with other T10 variants inadvisable without confirming matching electrical specifications.