H1 halogen headlight bulb for 12 V automotive electrical systems.
The BOSCH H1 12V 55W car bulb is a halogen headlight bulb with an H1 base, made for vehicles running a 12 V electrical system. It is supplied as a single piece, so you replace exactly the bulb that has failed.
H1 base for an exact fit in the headlight
The connection is the P14.5s standard used for H1 high beams, low beams, fog lamps and auxiliary driving lights. Check the marking in your vehicle handbook or on the old bulb before buying.
55 W halogen filament for 12 V systems
Power and voltage match the factory equipment of most passenger cars, so no change to the lighting circuit is needed. Halogen technology gives a warm white light and works with the original relays and fuses.
Fitting without touching the glass
Hold the bulb by its metal base — fingerprints on the quartz glass heat unevenly and shorten filament life. Common practice is to replace both front bulbs together so the beam stays even on each side.