The Lexus ES300 front and rear turn signal bulb sizes include 7440NA, 1034NA, 1157NA, 7440, and 1156 specifications for the lighting components. The replacement chart covers 1992 to 2003 model years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus ES300 front turn signal uses three distinct bulb types across its production span: the 1157NA for 1992-1997 models, the 1034NA for 1998-2001 models, and the 7440NA for 2002-2003 models.
The 7440NA and 7440 are both single-filament T20 wedge bulbs rated at 12V and 21W. The key distinction is that the 7440NA incorporates natural amber glass, while the 7440 uses clear glass.
The 1157NA and 1034NA share the same BAY15d bayonet base and dual-filament construction, both rated at 12V with a 21W high filament and a 5W low filament. The 1034NA is classified as a variant of the 1157NA.
The 1156 uses a BA15s single-contact bayonet base, which is not interchangeable with the BAY15d double-contact base found on the 1157NA and 1034NA, despite similar physical sizing.
The rear turn signal on the Lexus ES300 transitioned from the single-filament 1156 (1992-1995) to the single-filament 7440 (1996-2001), then to the 7440NA (2002-2003).
All five bulb types listed in these specifications conform to ANSI standards applicable to the US and Canadian markets.
The front and rear turn signals share the same bulb type for 2002-2003, both using the 7440NA, whereas earlier model years use different bulb types front and rear.
The "NA" suffix across the 7440NA, 1034NA, and 1157NA designations indicates natural amber glass, which produces an amber signal output without relying on an amber lens.