UK car bulb numbers by model

Headlight, sidelight, indicator, brake and number-plate bulbs for 57 models sold in the UK, by version and registration year, with both the UK number (501, 581, 380...) and the ECE code (W5W, PY21W, P21/5W...). Pick your make.

Key takeaways

Headlight bulbs (H7, H4, H1, H11...) are named by ECE code; small bulbs have a UK number too - a 501 is a W5W, a 581 is a PY21W, a 380 is a P21/5W.
The same model can use different headlight bulbs depending on trim, facelift and whether it has halogen, xenon or LED headlights.
The markings on the old bulb's base are the final check.

Browse by make

Audi BMW Citroen Dacia Fiat Ford Honda Hyundai Kia Mazda Mini Nissan Peugeot Renault Seat Skoda Toyota Vauxhall Volkswagen

Also for UK cars: battery sizes and wiper blade sizes. Driving a US-market car? US bulb sizes by year.

Source: Auto Bulbs Direct's vehicle bulb finder, checked registration plate by registration plate. Bulbs can change with trim level and headlight type, so check the markings on the old bulb (printed on its base) before buying. UK numbers (501, 581, 380...) and ECE codes (W5W, PY21W, P21/5W...) name the same bulb.