Lexus LS460 front side marker bulbs use 194 size while rear side marker bulbs use 168 size. The replacement chart covers 2007 to 2012 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus LS460 front side marker uses the 194 bulb across the 2007-2012 model years.
The 194 is an ANSI-standard miniature wedge bulb rated at 12V and 3.78W, classified under the T10 form factor.
The rear side marker on the Lexus LS460 uses the 168 bulb, which is specified for the 2007 and 2008 model years.
The 168 bulb is also an ANSI-standard T10 miniature wedge type, rated at 12V and 4.9W, making it a higher-wattage variant than the 194.
Both the 194 and 168 bulbs share the same T10 wedge base, though their wattage ratings differ at 3.78W and 4.9W respectively, and the two are not interchangeable despite the shared base type.
The T10 wedge base is a common miniature bulb format in which the electrical contacts are formed by the glass envelope itself rather than a separate metal base, allowing direct insertion into a compatible socket.
Both bulb types carry ANSI standardization applicable to the US and Canadian markets, indicating conformance to defined performance and physical tolerances within those regions.