Alfa Romeo 4C headlight bulb size by year

The low beam, high beam and fog light bulbs for every Alfa Romeo 4C from 2015–2020. Pick your year to jump straight to it. Each answer links to the page in Alfa Romeo’s owner’s manual it came from.

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Alfa Romeo 4C bulb sizes at a glance

YearsLow beamHigh beam
2015–20169012 / D5S9012 / D5S
20179012 / D5S9012 / D5S
2018–20199012 / D5S9012 / D5S
20209012 / D5S / LED9012 / D5S / LED

Where a year lists more than one bulb, it depends on trim or headlight type; see that year’s section below.

2015–2016 Alfa Romeo 4C headlight bulbs

LightBulbNotes
Low beam9012
also sold as HIR2
Halogen
Low beamD5SBi-Xenon
High beam9012
also sold as HIR2
Halogen
High beamD5SBi-Xenon
Where this comes from (4 sources)

Buy bulbs for your 2015–2016 Alfa Romeo 4C

Recommended9012 standard replacement

Same light as the original bulb, at the lowest price. Fits your low beam, high beam.

More 9012 options: brighter halogen, long life, LED upgrade
RecommendedD5S oEM-equivalent xenon

Matches the factory color (about 4300K). The safe choice for a direct replacement. Fits your low beam, high beam.

More D5S options: whiter xenon

2017 Alfa Romeo 4C headlight bulbs

LightBulbNotes
Low beam9012
also sold as HIR2
Halogen headlamps
Low beamD5SBi-Xenon
High beam9012
also sold as HIR2
Halogen headlamps
High beamD5SBi-Xenon
Where this comes from (1 source)

Buy bulbs for your 2017 Alfa Romeo 4C

Recommended9012 standard replacement

Same light as the original bulb, at the lowest price. Fits your low beam, high beam.

More 9012 options: brighter halogen, long life, LED upgrade
RecommendedD5S oEM-equivalent xenon

Matches the factory color (about 4300K). The safe choice for a direct replacement. Fits your low beam, high beam.

More D5S options: whiter xenon

2018–2019 Alfa Romeo 4C headlight bulbs

LightBulbNotes
Low beam9012
also sold as HIR2
Halogen
Low beamD5SBi-Xenon
High beam9012
also sold as HIR2
Halogen
High beamD5SBi-Xenon
Where this comes from (4 sources)

Buy bulbs for your 2018–2019 Alfa Romeo 4C

Recommended9012 standard replacement

Same light as the original bulb, at the lowest price. Fits your low beam, high beam.

More 9012 options: brighter halogen, long life, LED upgrade
RecommendedD5S oEM-equivalent xenon

Matches the factory color (about 4300K). The safe choice for a direct replacement. Fits your low beam, high beam.

More D5S options: whiter xenon

2020 Alfa Romeo 4C headlight bulbs

LightBulbNotes
Low beam9012
also sold as HIR2
Bi-Halogen headlights
Low beamD5SBi-Xenon headlights
Low beamLEDBi-LED headlights
High beam9012
also sold as HIR2
Bi-Halogen headlights
High beamD5SBi-Xenon headlights
High beamLEDBi-LED headlights

LED headlights are usually serviced as a complete lamp assembly rather than a separate bulb; a dealer or parts counter can quote the assembly for your trim.

Where this comes from (1 source)

Buy bulbs for your 2020 Alfa Romeo 4C

Recommended9012 standard replacement

Same light as the original bulb, at the lowest price. Fits your low beam, high beam.

More 9012 options: brighter halogen, long life, LED upgrade
RecommendedD5S oEM-equivalent xenon

Matches the factory color (about 4300K). The safe choice for a direct replacement. Fits your low beam, high beam.

More D5S options: whiter xenon

Always double-check the size printed on the old bulb’s base before you buy. See how we source our data. More Alfa Romeo models.