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Replacing a faulty headlight seems straightforward. Yet motorists regularly order the wrong bulb. An H7, H4 and H11 can look similar in an online search result, but they have different fittings and applications. What’s more, a bulb marketed as “extra bright” won’t automatically suit every headlight unit.
If you’re looking for an OSRAM halogen bulb for your car headlight, it’s wise to check three things first: the correct fitting, the permitted specifications, and your intended use. Doing so will help you avoid a return, incorrect light distribution, or unnecessarily rapid wear.
A product page may show a vehicle as compatible, even when the specific trim, build month or headlight variant differs. Always check your owner’s manual, the existing bulb, or OSRAM’s official compatibility list.
The different fittings are particularly important:
An H8, H11 and H16 can look similar in terms of their basic family, but they are not interchangeable without checking.
Terms like “+100%” or “+220%” are comparisons against a legal minimum standard or a standard bulb. According to OSRAM’s own product information, the stated light output is calculated against that benchmark. The actual experience also depends on the reflector, the headlight lens, the alignment, and the condition of your car.
So an extra-bright car bulb can help with the perception of light, but it won’t automatically turn an ageing or poorly adjusted headlight into a modern lighting system.
A higher colour temperature gives whiter or cooler light. That doesn’t necessarily mean the bulb puts more light on the road. An LED-look halogen bulb like the COOL BLUE INTENSE is primarily about a modern appearance. NIGHT BREAKER models, according to OSRAM, focus more on light range and light output. ULTRA LIFE, on the other hand, is designed for drivers who want to replace bulbs less often.
Alongside the letter code, also check the fitting number. An H7, for example, uses a P26.4t base, while an H4 has a P43t fitting. For H1 it’s P14.5s, and for H11 it’s PGJ19-2. These connections determine whether the bulb will sit mechanically correctly.
Also look at:
For some variants, especially H4, H11, H15 and certain NIGHT BREAKER models, the product information states that checking via the OSRAM compatibility database is necessary.
Don’t simply replace a standard bulb with one of a higher wattage. The headlight unit, wiring and fuse are designed for a specific power rating. Many models in this selection use 55W at 12V. The NIGHT BREAKER 220 H4 is listed as 60W in the product information, so double-check that this matches your vehicle.
Only use a halogen bulb in a housing designed for halogen bulbs. A halogen bulb is not a direct replacement for a complete xenon or LED unit without the appropriate approval, adapter and vehicle check.
A bulb with a cool, white colour can be appealing, but the coating and higher light performance don’t always align with the priorities of a high-mileage driver. The OSRAM ULTRA LIFE H7, according to its own product information, is designed for a longer lifespan than standard halogen bulbs. The COOL BLUE INTENSE series, on the other hand, focuses on white light and an LED-like appearance.
It’s best to replace halogen bulbs in pairs. That way, the colour and light pattern remain consistent on both sides.
Why this fits the profile: A practical choice for anyone looking for a standard H7 bulb and who wants to replace it less often.
The choice isn’t about an exaggerated colour claim, but a standard 55W H7 replacement with an emphasis on lifespan.
H7 fitting, 55W power, supplied as a pair and, according to OSRAM, designed for a longer replacement cycle.
Why this fits the profile: For drivers who, within halogen lighting, prioritise light output and a greater stated range.
The “+220%” claim is understood here as an OSRAM comparison against the legal minimum standard, not as a guaranteed improvement in every headlight.
H7 fitting, 12V, 55W, stated light range up to 150 metres and a colour temperature of 3700K according to the product information.
Why this fits the profile: Suitable for anyone who specifically needs an H11 bulb for, for example, fog lights, dipped beam or main beam, depending on the vehicle.
The H11 compatibility must be checked in advance against the official OSRAM list; the bulb is not treated as universally compatible.
12V, 55W, H11 fitting, supplied as a pair and, according to OSRAM, a stated light output of 1350 lumens per bulb.
Why this fits the profile: For a compatible H7 headlight where a whiter light appearance and LED look are important.
The colour change is not equated with LED lighting: this remains a 55W halogen bulb for a suitable H7 housing.
H7, 12V and 55W; according to OSRAM, up to 5000K colour effect and an LED look without replacing the headlight housing.
We’ve put together a full, up-to-date list of products that fully meet these strict selection criteria and comply with current European safety regulations.
Switch off the lights and let the headlight cool down completely. Do not touch the glass of the new bulb with bare fingers; grease can, according to the product information, cause localised heat build-up. Use gloves or a clean cloth.
After fitting, check:
If the headlight is difficult to access, requires bumper removal, or needs adjustment, it’s wise to have it fitted by a garage.
Check your owner’s manual or read the marking on the old bulb. An H4 has two filaments for dipped and main beam; an H7 has one filament and can be used for different functions depending on the vehicle. Don’t rely solely on the car model.
Not without checking. H8 and H11 can look similar in some applications, but the fitting, wattage and vehicle approval may differ. Check the manual and the official OSRAM compatibility data.
The lifespan varies by product, usage time, vibrations, voltage and headlight housing. According to its own product information, the OSRAM ULTRA LIFE is designed for a longer lifespan than standard bulbs. Replace bulbs in pairs and check after fitting that both light patterns are the same.
