What is the headlamp bulb?
LED. No trade number is printed.
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Opening the sheet…
In-depth guide
2021 Hyundai Sonata
2021 Sonata headlamps are LED. Replaceable trade numbers in the chart include the stop lamp PY21W, reverse W16W, and license W5W.
| Item | Figure |
|---|---|
| Headlamp, DRL, front turn, side repeater | LED. No trade number. |
| Stop | PY21W, 21 W, or LED type. |
| Reverse | W16W, 16 W. |
| License plate | W5W, 5 W. |
| Tail, rear turn, high-mount stop | LED. |
Source: owner's manual / last verified 2026-10-16 (2021 Hyundai Sonata owner's manual, bulb wattage (opens in a new tab)).
Difficulty, time, and cost are estimates when this guide gives them. Torque is a cited figure, or it is left off.
Main source: 2021 Hyundai Sonata owner's manual, bulb wattage (opens in a new tab), Hyundai Motor America, published 2020-08-20, read 2026-10-16.
Clean rag
For the lens. The chart does not name a tool.
| Item | Figure | Where it comes from |
|---|---|---|
| Headlamp, DRL, front turn, side repeater | LED. No trade number. | Bulb wattage |
| Stop | PY21W, 21 W, or LED type. | Bulb wattage |
| Reverse | W16W, 16 W. | Bulb wattage |
| License plate | W5W, 5 W. | Bulb wattage |
| Tail, rear turn, high-mount stop | LED. | Bulb wattage |
LED rows have nothing to buy. PY21W, W16W, and W5W are the exterior trade numbers the chart prints.
The wattage chart is the source. A lens sequence was not extracted.
2021 Sonata Owner's Manual. The PDF title is 2021 Sonata Owners Manual and the file was created August 20, 2020. The interior festoon lamps are in the same chart and are not the headlamp.
Outbound links only. BaySheet does not sell parts. Confirm fitment on the retailer page. Amazon links are searches for a real part name plus this vehicle. Tool rows do not get a product search. The search is not a part number.
Part
W16W reverse bulb for a 2021 Hyundai Sonata
16 W. The reverse row is not LED.
2021 Sonata bulb wattage (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
W5W license bulb for a 2021 Hyundai Sonata
5 W, license plate lamps.
2021 Sonata bulb wattage (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
PY21W stop bulb for a 2021 Hyundai Sonata
21 W. Only if the stop lamp is the bulb type, not the LED type.
2021 Sonata bulb wattage (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Tool
Clean rag
For the lens. The chart does not name a tool.
LED. No trade number is printed.
W16W, 16 W.
The maintenance checklist is on the site now. The email list is not sending yet, so this box will not store an address.
These guides cover the same kind of work. Their numbers belong to those vehicles, not to this one.
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