What size bulbs are fog lights?
Fog light bulb sizes vary by vehicle, but the most common bases you’ll encounter are H11, H16 (5202), 9006, 9005, along with H8, H9, and H3 in select models.
In practice, the exact bulb size is determined by the car’s fog light housing and socket. To replace, you should confirm the spec for your specific make, model, and year by checking the owner’s manual, inspecting the existing bulb, or using an official bulb finder tool from the vehicle manufacturer or an auto parts retailer. LED and HID conversions may change the base or require adapters though the socket base remains the same in many cases.
Common fog light bulb sizes
Here are sizes you’re likely to see in most modern cars. This list is not exhaustive; some models still use other bases or dual-bulb assemblies.
- H11
- H16 (also called 5202)
- 9005 (HB3)
- 9006 (HB4)
- H8
- H9
- H3
Due to variation by model and market, not all these sizes will fit your vehicle. Always verify the exact base and check the connector type before purchasing.
How to verify your bulb size
To avoid buying the wrong bulb, follow these steps to confirm your fog light size:
- Consult the owner’s manual or the vehicle’s service guide for the exact bulb specification.
- Inspect the current bulb by removing the fog light cover and reading the base code on the glass or base.
- Use a reputable online bulb finder or contact the dealership with your VIN for precise compatibility.
Having the right base is essential for fit and lighting performance. If you’re upgrading to LED or HID, be mindful of heat, wiring, and any CAN-bus or resistor requirements.
Summary
Fog light bulb sizes vary by vehicle, with common bases including H11, H16, 9005, 9006, H8, H9, and H3. Always verify the exact size using the manual, the existing bulb, or an official parts resource. When in doubt, seek professional guidance to ensure proper fit and functionality.
What size are my fog light bulbs?
H11 is one of the most common bulb sizes and is used for high beam, low beam, and fog lights by nearly every car manufacturer.
Are H7 and H11 bulbs the same?
No, H7 and H11 bulbs are not the same and cannot be used interchangeably because they have different base designs, socket types, and dimensions. The primary differences are their base configuration and the type of application they are designed for; H7 bulbs are often used for both low and high beams, while H11 bulbs are typically for low beams or fog lights.
Key differences between H7 and H11 bulbs
| Feature | H7 | H11 |
|---|---|---|
| Base/Socket Design | PX26d base with two bare prongs | PGJ19-2 base with two encased prongs |
| Application | Low and high beams | Low beams and fog lights |
| Dimensions | Larger diameter (~26 mm) | Smaller diameter (~19 mm) |
| Interchangeability | Not interchangeable with H11 | Not interchangeable with H7 |
(this||self).Wufxzb=function(c,e,f,l,k){var d=document.getElementById(c);if(d&&(d.offsetWidth!==0||d.offsetHeight!==0)){c=d.querySelector("div");var g=c.scrollWidth-c.offsetWidth,h=Math.min(e?g:0,g);c.scrollLeft=e&&(l||f)?0:h;var a=d.getElementsByTagName("g-left-button")[0],b=d.getElementsByTagName("g-right-button")[0];a&&b&&(e=RegExp("\\btHT0l\\b"),f=RegExp("\\bpQXcHc\\b"),a.className=a.className.replace(e,""),b.className=b.className.replace(e,""),h===0?a.className="pQXcHc "+a.className:(a.className=
a.className.replace(f,""),k&&c.classList.add("pA30Ne")),h===g?b.className="pQXcHc "+b.className:(b.className=b.className.replace(f,""),k&&c.classList.add("FpCCub")),setTimeout(function(){a.className+=" tHT0l";b.className+=" tHT0l"},50))}};}).call(this);(function(){var id='_Is8labOXBPTDi-gP5KnluQk_219';var rtl=false;var gecko=false;var edge=false;var soh=false;
(this||self).Wufxzb(id,rtl,gecko,edge,soh);})();
How to find the correct bulb
- Check your owner's manual: This is the most reliable source for the correct bulb type for your vehicle.
- Examine the existing bulb: Take out the old bulb and look for the bulb number printed on its base.
- Use an online bulb finder: Many automotive parts websites have tools that can look up the correct bulb for your specific vehicle.
Are E12 and C7 bulbs the same?
No, C7 and E12 are not the same thing; C7 is a bulb shape, while E12 is the base type. However, they are often used together because C7 bulbs are designed to fit into E12 candelabra sockets. The E12 base is a small screw-in base, and C7 is a common bulb shape that uses this base.
C7 and E12 explained
- C7: This refers to the shape and size of the bulb itself, which is typically small and round, about 1.5 inches tall. It is a common size for decorative and nightlight bulbs.
- E12: This refers to the screw base of the bulb. It is a small, 12mm diameter base that is also known as a candelabra base.
- How they work together: A C7 bulb will have an E12 base to screw into a compatible socket. This means a "C7 bulb" is really a C7-shaped bulb with an E12 base.
Can I use H11 for fog lights?
H11 is a type of automotive headlight bulb. It adapts to different lighting technologies, making it a reliable choice for both fog light and low beam needs. This light has an L-shaped socket and a single, efficient filament. It has a standard voltage of 12V, and it fits most vehicles effortlessly.
