Volvo XC40 Recharge Tail Light Bulb Size

The Volvo XC40 Recharge tail light utilizes PY21W and H21W bulb sizes for the specific lighting components. Data for the mentioned vehicle covers the range from 2021 through 2024.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2024	PY21W
2021-2023	H21W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W
ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W.	H21W

Additional Notes

H21W is the tail light bulb type used in the Volvo XC40 Recharge for the 2021-2023 model years, making it the most frequently specified bulb across this dataset.
The H21W operates at 12V and 21W, uses a single filament, and is mounted via a BAY9s bayonet base. It conforms to ECE standards, meaning it is approved for use in Europe and other markets that follow ECE lighting regulations.
The 2024 Volvo XC40 Recharge specifies a PY21W bulb rather than the H21W used in prior years. Although both bulbs share the same 12V, 21W single-filament design and ECE compliance, they are not interchangeable.
The PY21W produces amber light by means of a tinted or coated bulb envelope, whereas the H21W is a clear signalling bulb. This difference in light color is a key reason the two types serve distinct fitment requirements.
The base types differ between the two bulbs. The PY21W uses a BAU15s offset-pin bayonet base, while the H21W uses a BAY9s bayonet base. These bases are physically incompatible, preventing accidental cross-installation.
Both bulb types conform to ECE regulations, which govern photometric output, color, and base tolerances for signalling lamps used in road vehicles across Europe and numerous other regions.