For the 2021 Volvo XC40, both the low-beam and high-beam headlights use integrated LED lighting. The supplied fitment data does not identify a replaceable halogen headlight bulb or specify a projector versus non-projector variation, so confirm the headlamp assembly before ordering replacement parts.
The front fog lights use 64136 bulbs. The same 64136 size is listed for the brake lights. Rear turn-signal fitment includes two listed options: 5200 and 7507; check the existing bulb or lamp assembly to determine which applies to your vehicle.
Other listed exterior lighting is LED, including the front turn signals, reverse lights, center stop lamp, daytime running lights, license-plate lamps, parking lights, side markers, tail lights, and step lights. Interior applications—including the dome, glove-box, map, trunk, and other interior lights—are also listed as LED. Because LED assemblies may not use a conventional replaceable bulb, verify the original component and connector before purchasing.