The Lexus ES300 front side marker requires bulb sizes 194, 1157NA, or 1034NA, while the rear side marker uses a 168 size bulb. A replacement chart documents bulb specifications across the 1992 to 2003 production range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus ES300 front side marker uses three distinct bulb types across its 1992-2003 model years: the 168, 1034NA, 1157NA, and 194, reflecting hardware changes across different production generations.
The 194 and 168 are both T10 miniature wedge bulbs operating at 12V, though they differ in wattage. The 194 draws 3.78W while the 168 draws 4.9W, making them non-interchangeable despite sharing the same physical base format.
The 1157NA and 1034NA are both dual-filament bulbs with a BAY15d bayonet base and natural amber glass, rated at 12V with a 21W/5W output. The 1034NA is a variant of the 1157 series.
The Lexus ES300 rear side marker position uses the 168 bulb uniformly across all model years from 1992-2003, with no variation throughout the entire production span covered by these specifications.
The front side marker of the ES300 (1992-1993) uses the 168 bulb, the same type fitted to the rear side marker across all years, though the front and rear positions serve different lighting functions.
The 1157NA appears in the ES300 front side marker for the 1994-1995 and 1999-2001 model years. Its dual-filament design supports two independent brightness levels, a characteristic absent from the single-filament 194 and 168 wedge bulbs.
The 1034NA is specific to the ES300 front side marker for the 1996-1998 model years. As a variant of the 1157 series, it shares the BAY15d bayonet base and is not a direct drop-in replacement for the wedge-base 194 or 168 types.
The 194 bulb is used exclusively in the 2002-2003 ES300 front side marker position. At 3.78W, it is the lowest-wattage bulb among all types listed in these specifications.
The BAY15d bayonet base found on both the 1157NA and 1034NA is a two-pin offset base, physically incompatible with the wedge-style socket used by the 194 and 168 bulbs.
All bulb types listed in these specifications conform to ANSI standards applicable to the US and Canadian markets.