Toyota Corolla Parking Light Bulb Size

Additional Notes

• The 1157 bulb is the most frequently specified parking light across the Toyota Corolla's history, covering model years 1968-1981 and 1984-1986, as well as 1992. It is a dual-filament bulb rated at 12V and 21W/5W, and it uses a BAY15d bayonet base rather than the wedge-style base found on most other bulbs in these specifications.
• The 3157NA bulb appears across a wide span of model years, including 1998-2000, 2004-2006, and 2008. It is a dual-filament T25 wedge bulb rated at 12V and 27W/7W, with natural amber glass that produces an amber color output without the need for an amber-tinted lens or socket.
• The 7444NA and 7443NA bulbs, specified for the 2015-2016 and 2020 Toyota Corolla, are both T20 dual-filament wedge bulbs rated at 12V and 21W/5W with natural amber glass. The 7444NA and 7443NA share the same voltage and wattage ratings but are distinct part numbers, and substituting one for the other without confirming fitment compatibility may result in an improper installation.
• The 3357NA, specified for the 2009, 2011, and 2013 Toyota Corolla, is a single-filament T25 wedge bulb rated at 12V and 27W. This distinguishes it from the 3457NA and 3157NA, which are dual-filament bulbs of the same T25 form factor. Using a dual-filament bulb in a socket designed for a single-filament type can cause fitment or electrical issues.
• The 3457NA and 3157NA bulbs share identical voltage and wattage ratings of 12V and 27W/7W and are both dual-filament T25 wedge bulbs with natural amber glass. Despite these similarities, they carry different ANSI designations and are not confirmed as interchangeable within these specifications.
• The 194 bulb, a miniature T10 wedge type rated at 12V and 3.78W, is specified for the 1993-1997 and 2003 Toyota Corolla. Its wattage output is substantially lower than all other bulb types listed, reflecting its use in a lower-intensity parking light application during those model years.
• The 1987 Toyota Corolla is the only model year in these specifications with two distinct parking light bulb sizes listed, with the 194 applying to vehicles equipped with halogen capsule headlamps and the 1157 applying to those with sealed beam headlamps. This indicates that headlamp type directly affects the correct parking light bulb selection for that year.
• All bulb types across these specifications conform to ANSI standards applicable in the United States and Canada, meaning each bulb's physical and electrical characteristics follow a standardized definition within those markets.