Lexus LX450 front and rear side marker bulbs utilize 168 and 194 bulb sizes respectively. The replacement chart covers 1996 to 1997 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 LX450 uses two bulb types across its side marker positions: the 168 for the front and the 194 for the rear, covering the 1996-1997 model years.
Both the 168 and 194 are ANSI-standardized bulbs recognized in the US and Canada, meaning they conform to a defined set of electrical and physical standards rather than being proprietary fitments.
Both bulbs share the T10 miniature wedge form factor, a small single-contact base that seats without a twist-lock mechanism, relying instead on socket tension to maintain the connection.
Both bulbs operate on a 12-volt circuit, consistent with standard automotive electrical systems.
Although the 168 and 194 share the same T10 wedge base, they are not interchangeable. The 168 draws 4.9 watts while the 194 draws 3.78 watts, meaning the two differ in power consumption and light output.
The wattage difference between the 168 and 194 is relevant to fitment because substituting one for the other in a position not specified for it could result in incorrect brightness levels for that marker position.