The Lexus GX460 side marker utilizes a 194 bulb size for the lighting components located on the exterior of the vehicle. Data for the specific bulb requirements covers the range from 2021 through 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus GX460 uses the 168 bulb for both front and rear side markers across all model years from 2010-2023.
The 168 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized industry standard used across the United States and Canada.
The 168 bulb belongs to the T10 wedge family, a miniature wedge form factor that uses a tapering plastic base rather than a metal pin or bayonet fitting for socket retention.
The 168 operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of side marker applications where continuous illumination is expected without significant electrical load.
Because the front and rear side marker positions on the GX460 share the same bulb type, a single 168 bulb serves as a direct replacement for either location on the vehicle.
The T10 wedge base is a widely used form factor in automotive lighting, and the 168 shares this base with several related bulb types, including the 194 and 192. However, those related types differ in wattage, which affects brightness and thermal output, making them not automatically interchangeable without accounting for those differences.
The 168 specification remained unchanged across the entire 14-year production span of the GX460 covered in these specifications, indicating a consistent socket and housing design throughout the vehicle's generations.