A 7506 bulb is a two-filament automotive lamp used for tail lights and the brake/turn signal functions on many cars.
In more detail, the 7506 designation is a catalog identifier for a dual-filament, 12-volt automotive bulb. Variants exist with different base styles (bayonet, wedge, etc.) and wattages depending on the vehicle and region. Because socket configurations vary, always verify the exact bulb type from your owner's manual or a trusted parts catalog before buying or installing.
What the 7506 designation means
Base types and wattage vary by variant
The 7506 label identifies a specific two-filament automotive bulb in many supplier catalogs. The dual filaments allow two lighting circuits to share the same bulb: one filament for running or tail lights, another for brighter brake or turn signal lighting. Base shapes, mounting style, and wattage can vary by manufacturer, so not every 7506 is identical across brands.
Common uses and configurations
The following are typical lighting roles and configurations you might encounter when dealing with a 7506 bulb.
- Dual-filament operation for running lights and brighter stop/turn signaling
- Round, compact bulb design compatible with a range of automotive sockets
- 12-volt automotive standard in most markets, with wattages that vary by filament function
- Base and housing compatibility that may include bayonet, wedge, or other base styles depending on the vehicle model
- Availability across many aftermarket suppliers, so cross-referencing is important for accuracy
In practice, the precise role of a 7506 bulb depends on the vehicle and the particular bulb variant installed by the manufacturer. Always confirm the exact type before replacement to ensure proper brightness and socket fit.
Finding the right 7506 bulb for your vehicle
To identify and replace a 7506 bulb, follow these steps:
- Check your vehicle’s owner’s manual or the door jamb placard for bulb size and function; some cars list a 7506 or an equivalent code for tail/brake/turn lighting.
- Inspect the existing bulb or socket to determine the base type and filament arrangement; note two-filament design and any markings on the glass.
- Cross-reference with reputable bulb catalogs or a professional parts database to confirm compatibility, including base type and wattage.
- Purchase from a reputable brand and ensure the replacement matches the required wattages for both filaments.
- Install carefully, avoid touching the glass with bare skin, reseal the socket, and test the circuit to verify proper operation.
When in doubt, consult your trusted mechanic or an official parts dealer to confirm the exact bulb type for your vehicle’s year, make, model, and trim.
Summary
The 7506 bulb is a two-filament automotive lamp used to support dual-function lighting, typically tail/running lights and brighter brake or turn signaling. Because base types and wattages vary across manufacturers and vehicle models, always verify the correct variant through manuals or catalogs before purchasing or installing. Proper identification ensures reliable lighting and road safety.
Summary: The main point is that 7506 is a dual-filament automotive bulb used for tail and brake/turn functions, with variations by base and wattage; verify with documentation and replace accordingly.
Is 7506 the same as P21W?
P = Phillips The P21W is sort of the generic number as phillips created that bulb. Osram calls it a 7506 the 382 number is bulb shorthand for some catalogs that just added bulbs in order. So 382 was added as the 382nd bulb in the catalog. The Y/O/G/B after the P or as a suffix is the color of the bulb.
Is 7506 bulb the same as 1156 bulb?
The 7506 is a 21-watt bulb, whereas the 1156 is a 27-watt bulb (technically 26.9 watts, but it's close enough). Additionally, the 7506 bulbs utilize a nickel base, while the 1156 bulbs are equipped with a brass base.
What does a 7506 bulb fit?
The Osram 7506 bulb is a 12V 21W single element multipurpose light bulb commonly used in automobiles for brake lights. The Osram 7506 bulb can be used to replace any P21W or 1156 light bulb. Osram light bulbs are high quality and are the original equipment light bulbs for most European auto manufacturers.
What are the 4 types of light bulbs?
There are four prominent light bulb types: light-emitting diode (LED), compact fluorescent (CFL), incandescent, and halogen.