The Hyundai Tucson parking light utilizes 168, 2357NA, and PY21W bulb sizes depending on the specific version of the vehicle. Available information covers a range from 2005 through 2019.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 2357NA is the most frequently specified front parking light bulb across the Hyundai Tucson lineup, covering model years 2010-2020 in most configurations. It is a dual-filament bulb rated at 12V with a 26.9W high filament and 8W low filament, built to the ANSI standard used in the United States and Canada. Its base type is the BAY15d bayonet, and its glass envelope is natural amber rather than clear.
The 168 bulb was specified for the Hyundai Tucson front parking light from 2005-2009. It is a single-filament miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W, also conforming to the ANSI standard. Its significantly lower wattage distinguishes it from the 2357NA used in later model years.
The PY21W appears in the 2019 Tucson specification for vehicles produced from August 15, 2018 onward. It follows the ECE standard used in Europe and worldwide markets, operates on a single filament at 12V and 21W, and uses a BAU15s bayonet base. The BAU15s base has an offset pin arrangement that differs from the BAY15d base of the 2357NA, making the two bulbs physically non-interchangeable despite their similar appearance.
For the 2016-2019 Tucson, the 2357NA fitment is conditional on the vehicle being equipped with halogen capsule headlamps. The 2019 model year carries two distinct front parking light specifications depending on both the headlamp type and the production date, meaning the correct bulb for a given 2019 Tucson depends on both of those factors.
The 2357NA and PY21W share a 12V operating voltage but differ in filament count, wattage, base type, and regulatory standard. The 2357NA is dual-filament with a BAY15d base, while the PY21W is single-filament with a BAU15s base. These differences mean the two bulbs are not interchangeable, even when both are amber and rated for similar applications.
The natural amber glass of the 2357NA produces its amber output through the glass coating itself rather than through a clear bulb in an amber lens housing. This is a relevant distinction when the bulb is used in a housing designed around a naturally amber light source.