Honda Element front turn signal bulbs utilize 1157NA, 1034NA, or 7443 size specifications, while rear turn signal applications require 7440NA bulb size. The replacement chart encompasses 2003 through 2011 production 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 7440NA is the most consistently used bulb across the Honda Element's turn signal specifications, appearing in the rear turn signal position for every model year listed, from 2003-2011.
The 7440NA is a single-filament T20 wedge bulb rated at 12V and 21W, with natural amber glass that produces an amber color output without relying on a colored lens or housing.
The front turn signal position on the Honda Element uses three distinct bulb types across its model years: the 7443 (2003-2006), the 1034NA (2009-2010), and the 1157NA (2011).
The 7443 is a dual-filament T20 wedge bulb rated at 12V, 21W/5W. It shares the same T20 wedge form factor as the 7440NA used in the rear, but the two are not interchangeable due to the difference in filament count and wattage configuration.
The 1157NA and 1034NA both use a BAY15d bayonet base, which is a physically different mounting type from the T20 wedge base used by the 7443 and 7440NA, making cross-substitution between these base types impossible.
The 1034NA is classified as a variant of the 1157NA, sharing the same BAY15d base, dual-filament design, natural amber glass, and 12V/21W/5W rating under the ANSI standard.
The "NA" suffix present on the 1157NA, 1034NA, and 7440NA designations indicates natural amber glass, meaning the amber color is built into the bulb envelope rather than produced by an external amber lens.
All bulb types listed across both front and rear positions conform to ANSI standards applicable in the United States and Canada.
The front turn signal position shifted from a T20 wedge base (7443) in 2003-2006 to a BAY15d bayonet base (1034NA, 1157NA) in 2009-2011, representing a base-type change between those production periods.
The dual-filament configuration of the 7443, 1034NA, and 1157NA allows a single bulb to serve two functions at different wattages, typically combining a brighter turn signal filament at 21W with a lower-intensity running or parking light filament at 5W.