Car bulb sizes

Car bulb sizes DEFAULT

To make things even worse, some of them are not even as bright as the original halogen bulb. A projector does both beams, low and high, even though it uses a single filament light bulb. Inside a projector there is a shutter that opens and closes to show you all of the light output or only half. So even if you have a basic single filament light bulb you can still get the dual beam out of a projector headlight. This is not the case with the reflector analog. Projectors can make one or two beams depending on the design while reflectors are always one beam. If you want reflector to do both hight and low beam you have to use a different type of a light bulb. Nowadays, a lot of cars can come with a projector and reflector type of headlights on the same vehicle.

For example, you can replace reflector headlights with a projector kit of the same shape. It is a pretty common upgrade because some people like the way the projector looks. Theoretically, it also provides a better beam pattern. Reflectors are pretty simple – a bulb illuminates the chrome area inside, light source bounces off the shiny surface that creates a beam pattern. Generally, it is fairly inefficient and not very focused. At least, not as focused as compared to the projector. The interesting thing about the projector headlights is that they sometimes incorporate the benefits of both technologies. Opposite to a very large horizontal layout found in the reflector, the projector has a very small bowl with the light bulb sitting backward.

The light from the bulb is captured inside this small bowl and gets focused through the lens. The same principle is leveraged when using the magnifying glass in the sun to start a fire except for the fact the desired effect with the lens is to create a razor-sharp beam pattern. There is one big characteristic of the different types of projector lenses dividing them into a single beam and dual beam with the latter one having a solenoid and some wiring coming out. If you give this connector 12 volts the solenoid will be activated inside the projector to lower the cut-off shield. In low beam position, not energized, the shield is upright and creates a sharp cut-off horizontal line.

When switching from low to high beam the solenoid is energized and the shield pulls down opening up the projector lens for 100 percent. In the dual beam projector, this creates high and low beams. In a single beam projector, there is simply one static projector for low beam and either another projector or a reflector for high beam. Some cars might use all three styles. Let us sum up the differences between the reflector and projector headlights. Normally, reflector headlights will use halogen bulbs but there are certain circumstances with a vehicle coming off the factory with a reflector with HID. Same goes for projectors.

It is a 50-50 situation. A lot of factory projector headlights come with a halogen light bulb but a lot of times they have LED or HID. Sometimes you can convert a reflector headlight to LED or HID with just different light bulbs. And sometimes you can do the same thing with the projector. Generally speaking, you are guaranteed an increase in light output if you convert your projector halogen bulb to HID. If you stick with LED the odds are not that good as more and more products are coming to the market which are suitable applications for an LED bulb in a projector. But if you already have projector headlights and you want to make them brighter your best bet is an HID conversion kit.

It is strongly recommended to always wear safety glasses when replacing their headlight bulbs for safety reasons.

We cannot claim to provide a comprehensive headlight bulb guide without mentioning this topic. To start with, always know that the color of the light is always measured in K which is obtained by using the Kelvin scale.

A typical halogen bulb like those found in most cars will be classified as being of warm colors. For it to have an even more temperature, it has to pass through the tinted glass. Now you know why cars that have blue headlight bulbs end up producing white light. But the darker the tint is, the bluer the color will become.

Headlights alignment

How to correctly aim and adjust headlights? Contrary to what many people may be aware of, your car’s headlights are designed in a way that they would end up being a fit in countries that either drive on the left side or the right side.

This is why the headlights used for left-sided traffic always have low-beam headlights that refract to the left. This allows the light to be disbursed in a way that it moves downward as a way of letting the driver see the road without having to blind oncoming traffic. The vice-versa is true for cars that are driven on the right side of the road.


SAE is a type of stamp that is majorly used in the US while the ECE is common for the European nations. The only difference between the two is the allowed light intensity and the permissible amount of glare. For instance, America allows more glare.

Load adjustment

The term load adjustment, whenever used, implies that the headlights will typically adjust themselves bending downwards to avoid dazzling the cars moving in the opposite line.

Understanding wattage

Many people tend to get this aspect absolutely wrong. If you want more light, simply go for more watts. It is that simple. You cannot, for instance, compare the light output of a 40Wlight bulb with a 150 W light bulb.

A marking such as 65/55W means that the low beam is 55W and the high beam is 65W.

Check out the full database of car bulbs.

Final Remarks

Considering the above said, we advise to seek a balance between performance, longevity, and price. Headlight manufacturers tend to charge more for bulbs that are whiter and very bright as well. This means that brighter bulbs with higher color temperature and higher light output cost more. Halogen headlight bulbs end up being white and brighter but do not last long. If you want to try high-end products like HIDs and LEDs headlights bulbs, you will get a great white (brighter) lamps with a solid life span. While a high output halogen bulb is expected to last for a year, LED and HIDs will last between 3 and 4 years. Hopefully, you have all the information you need on headlight light bulbs to make the right decisions.

Also, check out our wheels sizes database. 


How To Pick the Right Headlight Bulb Size for Your Automobile – Definite Guide

As a car owner, you need to know the ins and outs of your vehicle and what better way to start than to learn all about automotive headlight bulb sizes. The following guide will help you get a better understanding of the different aspects related to car headlights, and also how you can replace one on your own.

Knowing your Car’s Light Bulb Code

Quick Navi -

Different Sizes Of BulbsWhen you start looking for a headlight bulb for your car, the first thing you will need to do is to consult your car’s manual. This will ensure that you will get the right kind of bulb, be it a halogen bulb, HID or an LED light bulb.

Once you’ve seen your car’s headlight, you will see that these bulbs come in various sizes. Each of these headlight bulb sizes is represented with number and letter combination.

These combinations of letters and numbers are codes provided by the United Nations in order to standardize the bulbs in different countries. This means that even if you live in the United States and you own a Japanese car, you can rest assured that whatever bulb you buy from Amazon remains in line with the United Nations safety regulation.

According to the United Nations Regulation No. 37, a document which tackles the regulation of headlamps, there are three main categories of headlamps:

  • Group 1: Headlamps without general restrictions.
  • Group 2: Car lamps which are to be used only as signalling lamps, cornering lamps, reversing lamps and rear registration plate lamps.
  • Group 3: Headlamps which are to be used only for replacement of lamps in older car models.

If you notice, these headlights’ codes are usually starting with an H, P, or S. But don’t panic! H in these headlights stand for Halogen, P and S are codes in headlights to mean that they are LED light bulbs.

What are the Different Kinds of Headlight Bulbs to Choose From?

The following 3 headlight bulbs are the most sought-after types in today’s market:

  • The Halogen Bulb- This type has been around for the longest time period and dates back to the 1960s. The halogen bulbs emit more light than the traditional ones by consuming the same power. The efficiency of Halogen bulbs can be attributed to their mechanism. Halogen bulbs contain a highly reactive halogen gas that helps the tungsten filament burn even brighter than a normal light bulb making them effective as headlights.
  • The HID/Xenon Bulb- World-famous company, Philips, launched the HID or High-Intensity Discharge bulbs as an improvement to the halogen bulbs. These bulbs don’t work on burning filament, but instead use a light arc placed between the two electrodes situated inside a chamber filled with xenon gas. This arc is made up of ionized xenon, which produces a current between the electrodes, thereby emitting a blueish bright light.

What Kinds of Options Does Someone Have When Picking Bulbs?The luminous efficacy of these lights is better than the halogen bulbs, which increase the visible spectrum. This means that you can see better with the Xenon bulbs as they produce better incandescence than a halogen bulb.

And since there are no filaments to burn, these bulbs last longer than the halogen bulbs. However, they require more power than halogen or LED bulbs, and the glare produced by these bulbs is too powerful. That is why you may require fitting in beam leveling control (automatic) and lens cleaning system to avoid any untoward incident while using these bulbs on road.

  • The LED bulb- The LED or Light Emitting Diodes bulbs do not wear and tear like the Xenon or halogen bulbs. The durability of the LED bulbs can last a lifetime, and certain manufacturers claim durability of up to 30,000 hours. They require very little power as against the two other headlight bulb types. In terms of light intensity emitted by LED bulbs, it is considered to be higher than HID or Halogen bulbs. The light is crisp and white, somewhat like daylight, thereby offering maximum illumination with fewer glares.

Why are there Different Sizes of Light Bulbs?

  • Bulbs aren’t “one-size-fits-all”- No car is designed identically and this goes the same for all the available light bulbs in the market today. Light bulbs vary in order to help motorists see better and more comfortably especially at night. Knowing about your car’s light bulb size will ensure that it will fit perfectly in your car’s headlight socket for safer driving.
  • Bulb Design- Another reason for the difference in size of the bulbs is their build. There are some bulbs that use a single filament, while there are others that come with double filaments. Double filaments are commonly seen in bulbs known to produce both high or low beam. Single filament or single beam headlights only produce either high or just a low beam.
  • Dimension Difference- Bulbs come in various dimensions which implies that the headlight space design will dictate what kind of bulb you should buy. Choose the one that is sized properly to fit into the headlight space. To check for the right size and conversion, refer to your car’s manual always.

Different Sizes Of Bulb

Most Popular Sizes Used in Vehicles Today

Some of the most popular headlight bulb sizes used in modern day vehicles include the following: H1, 207, H6W, 233, H3, 239, 245, H3C, H4, H15, H13, 380, HB3, 382, H1R2, H7, HB4, H8, H9, H11, HB4A.

All the major brands offer headlight bulbs in these sizes, which you can use either for replacing your old headlight bulb or upgrading your current bulbs.

Do-it-Yourself Headlight Bulb Replacement

We cannot emphasize this more than enough, that before you start thinking about replacing your car’s headlights, you should begin by doing the most basic and that is by checking your car’s manual to learn about the correct type of headlight to buy and also to know how to properly change it.

Once you have purchased the right headlight bulb, you can proceed with the following steps:

  • Step no.1- Make sure that the car is not switched on. Turn off the engine and remove the keys from the ignition. By doing so, you are ensuring your safety and your car’s.
  • Step no. 2- Open your car’s good and look for the headlight holder just close to the front end of your vehicle.
  • Step no.3-  Once open, you will see that there is a cap or a clip that holds the headlight bulb, you can push down this cap or clip to further open it.
  • Step no. 4- Carefully loosen up the existing headlight bulb. DO NOT JUST YANK IT OUT OF THE SOCKET! Do this carefully because these bulbs are fragile and you might risk injuring yourself if not done carefully. Also, some cars have kept the light bulb socket/holder just in the inner fender and you will have to move past the air filter housing to reach it. Do this carefully, otherwise, you will have to replace the whole socket should you break it.
  • Step no. 5- Screw the new bulb into place carefully. Make sure that your hands are clean and free from oil or grease. These bulbs are gentle and can burst open in case it gets heated up with oil on the surface.

Popular Sizes Used in Vehicles Today

NOTE: has an excellent article that will let you learn more information about appropriately replacing bulbs on any automobile.


Hopefully, now you have a clearer picture about headlight bulb varieties, sizes, and simple steps to install a headlight.

We would like to stress that picking the right size of a headlight bulb is the key to a successful installation of a new headlight bulb to upgrade your vehicle.

If you’re still looking for an even better option for a brighter night driving, we have a buyer’s guide on LED bulbs for your car. Currently, LED outweighs the old halogen bulbs in terms of illumination.

Ever changed your car’s headlight bulbs yourself? Do comment below and let’s grow our community of well-informed buyers only here on!



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List of automotive light bulb types

Light bulbs for automobiles are made in several standardized series. Bulbs used for headlamps, turn signals and brake lamps may be required to comply with international and national regulations governing the types of lamps used. Other automotive lighting applications such as auxiliary lamps or interior lighting may not be regulated, but common types are used by many automotive manufacturers.


The World Forum for Harmonization of Vehicle Regulations (ECE Regulations) develops and maintains international-consensus UN Regulations on light sources acceptable for use in lamps on vehicles and trailers type-approved for use in countries that recognise the UN Regulations. These include Regulation 37,[1] which contains specifications for filament lamps, and Regulation 99 and its addenda[2][3] which covers light sources for high-intensity discharge headlamps. Some UN-approved bulb types are also permitted by some other regulations, such as those of the United States or of Japan, though Japan has begun supplanting the former Japanese national regulations with the international UN regulations.

Filament lamps[edit]

UN Regulation 37 covers motor vehicle filament lamps. These are categorized in three groups: those without general restriction that can be used in any application, those acceptable only for signalling lights (not for road illumination lamps), and those no longer allowable as light sources for new type approvals but still permitted for production as replacement parts.

Group 1[edit]

"HB3" redirects here. For Hemoglobin A3, see Hb3.

CategoryFilamentsNominal power
(major/minor filament
where applicable)
Cap (base)
per IEC 60061
Other approvalsRemarksImage
H11 6 V & 12 V: 55 W
24 V: 70 W
P14.5s USA, Japan 12V: ECE approved Luminous flux: 1,550 lm ±15% H1-Lampe-12V-55W 20050302 1950 2247.jpg
H3 1 6 V & 12 V: 55 W
24 V: 70 W
PK22s USA, Japan 12V: ECE approved Luminous flux: 1,450 lm ±15% Osram H3 12V 55W.jpg
H4 2 6 V & 12 V: 60 / 55 W
24 V: 75 / 70 W
P43t Japan Similar US bulb: HB2 (9003)

12V: ECE approved Luminous flux: 1,650 / 1,000 lm ±15% (H4 envelope with P45t base available for classic cars)

H4 Philips Premium used.JPG
H7 1 12 V: 55 W
24 V: 70 W
PX26d USA, Japan 12V: ECE approved Luminous flux: 1,500 lm ±10% Philips H7 12V 55W.jpg
H8 1 12 V: 35 W PGJ19-1 USA 12V: ECE approved Luminous flux: 800 lm ±15% Philips H8 12V 35W.jpg
H8B 1 12 V: 35 W PGJY19-1 USA
H9 1 12 V: 65 W PGJ19-5 USA
H9B 1 12 V: 65 W PGJY19-5 USA
H10 1 12 V: 42 W PY20d USA US trade # 9145

12V: ECE approved Luminous flux: 850 lm ±15%

H11 1 12 V: 55 W
24 V: 70 W
PGJ19-2 USA 12V: ECE approved Luminous flux: 1,350 lm ±10%
H11B 1 12 V: 55 W
24 V: 70 W
H12 1 12 V: 53 W PZ20d USA US trade # 9055

12V: ECE approved Luminous flux: 1,050 lm ±15%

H13 2 12 V: 60 / 55 W P26.4t USA US trade # 9008

12V: ECE approved Luminous flux: 1,700 / 1,100 lm ±15%

H13A 2 12 V: 60 / 55 W PJ26.4t USA
H14 2 12 V: 60 / 55 W P38t Japan 12V: ECE approved Luminous flux: 1,750 / 1,150 lm ±15%
H15 2 12 V: 55 / 15 W

24 V: 60 / 20 W

PGJ23t-1 USA, Europe 15 / 20 W filament for DRL function Osram H15 12V-15-55W lamp.jpg
H16 1 12 V: 19 W PGJ19-3 similar to PS19W
H16B 1 12 V: 19 W PGJY19-3
H21W 1 12 V & 24 V: 21 W BAY9s
H27W/1 1 12 V: 27W PG13 USA US trade # 880
H27W/2 1 12 V: 27 W PGJ13 USA US trade # 881
HB3 1 12 V: 60 W P20d 90° USA, Japan US trade # 9005
HB3A 1 12 V: 60 W P20d 180° USA US trade # 9005XS
HB4 1 12 V: 51 W P22d 90° USA, Japan US trade # 9006 HB4 (9006) bulb 12 V, 51 W
HB4A 1 12 V: 51 W P22d 180° USA US trade # 9006XS
HIR1 1 12 V: 60 W PX20d USA, Japan US trade # 9011
HIR2 1 12 V: 55 W PX22d USA, Japan US trade # 9012
HP24W 1 12 V: 24 W Exclusively produced by Valeo for PSA Group
HPY24W 1 12 V: 24 W Amber, Exclusively produced by Valeo for Land Rover?,
HS1 2 6 V & 12 V: 35 / 35 W PX43t For motorcycles
HS2 1 6 V & 12 V: 15 W PX13.5s For motorcycles
HS5 2 12 V: 35 / 30 W P23t For motorcycles
HS5A 2 12 V: 45 / 40 W PX23t For motorcycles
HS6 2 12 V: 40 / 35 W PX26.4t For motorcycles
PX24W 1 12 V: 24 W PGU20-7
PSX24W 1 12 V: 24 W PG20-7 similar to H16/PS19W, but has more power
PSX26W 1 12 V: 26 W PG18.5d-3
S2 2 6 V & 12 V: 35 / 35 W BA20d For motorcycles Automotive Light Bulb, Model: S2, Voltage: 12 V, Wattage: 35 W / 35 W, Socket: BA20d
S3 2 6 V & 12 V: 15 W P26s For mopeds

Group 2[edit]

CategoryCap (Base)FilamentsNominal Power
where applicable)
C5W SV8.5 1 6 V, 12 V, 24 V: 5 W Old designation: C11, common name is "festoon" base C5W lamp.JPG
H6W BAX9s 1 12 V: 6 W H6W Halogen Lampe.jpg
HY6W BAZ9s 1 12 V: 6 W Amber
H10W/1 BAU9s 1 12 V: 10 W
HY10W BAUZ9s 1 12 V: 10 W Amber
H21W BAY9s 1 12 V & 24 V: 21 W
HY21W BAW9s 1 12 V & 24 V: 21 W Amber
P13W PG18.5d-1 1 12 V: 13 W
PW13W WP3.3×14.5-7 1 12 V: 13 W
PC16W PU20d-1 1 12 V: 16 W
PCR16W PU20d-7 1 12 V: 16 W Red
PW16W WP3.3×14.5-8 1 12 V: 16 W
PWR16W WP3.3×14.5-10 1 12 V: 16 W Red
PWY16W WP3.3×14.5-9 1 12 V: 16 W Amber
PS19W PG20-1 1 12 V: 19 W
PSY19W PG20-2 1 12 V: 19 W Amber
PW19W WP3.3×14.5-1 1 12 V: 19 W
PWR19W WP3.3×14.5-5 1 12 V: 19 W Red
PWY19W WP3.3×14.5-2 1 12 V: 19 W Amber
P21W BA15s 1 6 V, 12 V, 24 V: 21 W Old designation: P25-1
Also used for DRL function
PR21W BAW15s 1 12 V & 24 V: 21 W Red
PY21W BAU15s 1 12 V & 24 V: 21 W Amber
P21/4W BAZ15d 2 12 V & 24 V: 21 / 4 W Also used for DRL function along with integrated parking lamp beam
PR21/4W BAU15d 2 12 V & 24 V: 21 / 4 W Red
P21/5W BAY15d 2 6 V, 12 V, 24 V: 21 / 5 W Old designation: P25-2
Also used for DRL function along with integrated parking lamp beam
Osram 12V 21W 5W.jpg
PR21/5W BAW15d 2 12 V & 24 V: 21 / 5 W Red
P24W PGU20-3 1 12 V: 24 W
PY24W PGU20-4 1 12 V: 24 W Amber
PH24WY 1 12 V: 24 W Amber Philips PH24WY.jpg
PS24W PG20-3 1 12 V: 24 W
PSX24W PG20-7 1 12 V: 24 W Similar to PS24W, but with white base
PSY24W PG20-4 1 12 V: 24 W Amber Philips PSY24WSVplus lamp.jpg
PW24W WP3.3×14.5-3 1 12 V: 24 W
PWR24W WP3.3×14.5-6 1 12 V: 24 W Red
PWY24W WP3.3×14.5-4 1 12 V: 24 W Amber
P27W W2.5×16d 1 12 V: 27 W US trade # 3156
P27/7W W2.5×16q 2 12 V: 27 / 7 W US trade # 3157 P27 7W lamp.JPG
PR27/7W WU2.5x16 2 12 V: 27 / 7 W Red
PY27/7W WX2.5x16q 2 12 V: 27 / 7 W Amber
US trade # 3757A
PY27 7W lamp used.JPG
R5W BA15s 1 6 V, 12 V, 24 V: 5 W Old designation: R19/5 R5W lamp.JPG
RR5W BAW15s 1 12 V & 24 V: 5 W Red
R10W BA15s 1 6 V, 12 V, 24 V: 10 W Old designation: R19/10 R10W lamp.JPG
RR10W BAW15s 1 12 V & 24 V: 10 W Red
RY10W BAU15s 1 6 V, 12 V, 24 V: 10 W Amber
T1.4W P11.5d 1 12 V: 1.4W
T4W BA9s 1 6 V, 12 V, 24 V: 4W Old designation: T8/4 T4W lamp.JPG

or 286

12 V: 1.4W Same as a T5? Usually in a dashboard twist holder




1 12 V: 1.2W, 2.3 W T5 size.

Could be:

- Osram 2723,

- Narva 17073,

- Philips 12516, etc

WY2.3W W2×4.6d 1 12 V: 2.3 W Amber
W3W W2.1×9.5d 1 6 V, 12 V, 24 V: 3 W T10 size

Old designation: W10/3

US trade # 194

W5W W2.1×9.5d 1 6 V, 12 V, 24 V: 5 W T10 size

Old designation: W10/5

US trade # 168

Philips 12V 5W.jpg
WR5W W2.1×9.5d 1 12 V & 24 V: 5 W Red
WY5W W2.1×9.5d 1 6 V, 12 V, 24 V: 5 W Amber
W10W W2.1×9.5d 1 6 V & 12 V: 10 W T13 size
WY10W W2.1×9.5d 1 6 V & 12 V: 10 W
W15/5W WZ3×16q 2 12 V: 15 / 5 W for motorcycles
W16W W2.1×9.5d 1 12 V: 16 W T15 size

US trade # 921

W16W lamp broken.JPG
WY16W W2.1×9.5d 1 12 V: 16 W Amber, US trade # 921NA
W21W W3×16d 1 12 V: 21 W T20 size

US trade # 7440
Also used for DRL function

W21W lamp.jpg
WY21W WX3×16d 1 12 V: 21 W Amber
US designation: 7440NA
WY21W lamp.jpg
WP21W WY2.5×16d 1 12 V: 21 W
WPY21W WZ2.5×16d 1 12 V: 21 W Amber
W21/5W W3×16q 2 12 V: 21 / 5 W T20 size

US designation: 7443
Also used for DRL function along with integrated parking lamp beam

WR21/5W WY3×16q 2 12 V: 21 / 5 W Red

Group 3[edit]

CategoryCap (Base)FilamentsNominal powerCommentsImage
C21W SV8.5 1 12 V: 21 W Old designation: C15,
for reversing lamp only
H2 X511 1 12 V / 55 W Deleted from Reg 37 H2 automotive lamp.jpg
P19W PGU20-1 1 12 V: 19 W
PC16W PU20d-1 1 12 V: 16 W
PCR16W PU20d-7 1 12 V: 16 W Red
PCY16W PU20d-2 1 12 V: 16 W Amber
PR19W PGU20-5 1 12 V: 19 W Red
PY19W PGU20-2 1 12 V: 19 W Amber
PSR19W PG20-5 1 12 V: 19 W Red
PSR24W PG20-6 1 12 V: 24 W Red
PR24W PGU20-6 1 12 V: 24 W Red
R2 P45t 2 6 V & 12 V: 45 / 40 W

24 V: 55 / 50 W

'Bilux'. Upgraded power version with P45t

base and halogen H4 envelope available

S1 BA20d 2 6 V & 12 V: 25 / 25 W for motorcycles

Gas discharge lamps[edit]

UN Regulation 99 covers gas discharge light sources for use in vehicle headlamps. All light sources acceptable under Regulation 99 are also acceptable under US regulations.

CategoryCap (Base)Nominal powerRemarksImage
D1R PK32d-3 85 V / 35 W Integral ignitor
For reflector systems
D1S PK32d-2 85 V / 35 W Integral ignitor
For projector systems
D2R P32d-3 85 V / 35 W For reflector systems
D2S P32d-2 85 V / 35 W For projector systems Xenonlamp.jpg
D3R PK32d-6 42 V / 35 W Mercury-free
Integral ignitor
For reflector systems
D3S PK32d-5 42 V / 35 W Mercury-free
Integral ignitor
For projector systems
D4R P32d-6 42 V / 35 W Mercury-free
For reflector systems
D4S P32d-5 42 V / 35 W Mercury-free
For projector systems
D5S PK32d-[7] 12 V: 25 W Ballast output voltage
D6S P32d-1 42 V: 25 W
D7S PK32d-1 42 V: 25 W
D8S PK32d-1 42 V: 25 W


There is a German national regulation for vehicle bulbs, now superseded by international ECE regulations. Bulbs according to the old German regulation are still manufactured. The German regulation is contained in §22a, Subsection 1, No. 18 of the Straßenverkehrs-Zulassungs-Ordnung (StVZO, Road Traffic Approval Regulation). Per the Fahrzeugteileverordnung (FzTV, Vehicle Parts Regulation), such light bulbs must bear an approval mark consisting of a sine wave and the letter 'K'. The technical requirements themselves are established by standards produced by DIN.

CategoryNominal powerFilamentsCap (Base)CommentsImage
Form K (DIN 72601, Part 4) 6 V, 10 W 1 SV8.5-8 11 × 41 mm
Form K (DIN 72601, Part 4) 12 V, 10 W 1 SV8.5-8 11 × 41 mm
Form K (DIN 72601, Part 6) 6 V, 18 W 1 SV8.5-8 15 × 41 mm
Form K (DIN 72601, Part 6) 12 V, 18 W 1 SV8.5-8 15 × 41 mm
Form K (DIN 72601, Part 6) 24 V, 18 W 1 SV8.5-8 15 × 41 mm
Form R (DIN 72601, Part 6) 6 V, 18 W 1 BA15s
Form R (DIN 72601, Part 6) 12 V, 18 W 1 BA15s
Form R (DIN 72601, Part 6) 24 V, 18 W 1 BA15s
Form S (DIN 72601, Part 7) 6 V, 18 / 5 W 2 BAY15d
Form S (DIN 72601, Part 7) 12 V, 18 / 5 W 2 BAY15d
Form S (DIN 72601, Part 7) 24 V, 18 / 5 W 2 BAY15d

United States and Canada[edit]

In the United States, entry 49 CFR 564 in the Code of Federal Regulations requires manufacturers of headlight bulbs, officially known as "replaceable light sources", to furnish the National Highway Traffic Safety Administration (NHTSA) with product specifications at least 60 days prior to first use.[4] The specifications supplied by the manufacturer, on approval by NHTSA, are entered in Federal docket NHTSA-1998-3397.[5] From then on, any light source made and certified by any manufacturer as conforming to the specifications is legal for use in headlamps certified as conforming to Federal Motor Vehicle Safety Standard 108. Light sources for vehicle lamps other than headlamps are not Federally regulated.

In Canada, vehicle headlamps may use light sources (bulbs) conforming to either the US or the international ECE regulations.[6]: 108(5)(a) 

Bulb TypeTrade NumberCap (Base)FilamentsNominal power @ 12.8v
(High/Low beam
where applicable)
HB1 9004 P29t 2 65 / 45 W
HB2 9003 P43t-38 2 60 / 55 W
European H4 w/stricter geometric tolerances
& lower max output limit
HB3 9005 P20d (90°) 1 65 W
HB3A 9005XS P20d (straight) 1 65 W HB3 w/180° straight base
HB4 9006 P22d (90°) 1 55 W
HB4A 9006XS P22d (180° straight) 1 55 W HB4 w/180° straight base
HB5 9007 PX29t 2 65 / 55 W
H13 9008 P26t 2 65 / 55 W
CategoryCap (Base)FilamentsNominal powerCommentsImage
PC194 T10 (if removable)

or fixed to holder

1 14 V / 3.78W Used on circuit boards
for e.g. dash lights, gauge

cluster backlights.

Similar in size to W3W if

with a T10 base.

PC194 lamp.JPG
PC74 T1-3/4 (if removable)

or fixed to holder[7]

1 14 V / 1.4W Used on circuit boards
for e.g. dash lights, gauge

cluster backlights.

Other countries[edit]

CategoryCap (Base)FilamentsElectrical CharacteristicsCommentsImage
H3C 1 6 V / 55W,
12 V / 55W,
24 V / 70W
(USA for unregulated auxiliary lamps only)

See also[edit]


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She left the package on the ottoman. And the panties. The chill in the crotch reminded of their absence. How did I forget about them. They just did not catch my eye in the kitchen.

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And then suddenly, during an orgasm, Sveta suddenly, for no reason, no reason, brazenly and treacherously left the waters. And right on the face of her husband. When the poor fellow began to choke, Sveta could not control herself, because she rubbed her crotch with all her might on his face and moaned. In voluptuous convulsions.

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She suddenly imagined what she looked like from the side - the former pride of Gryffindor, the best student of Hogwarts, kneeling naked in a dirty prison cell and. Catching a stream of urine with her open mouth, to drink it all down. From this one picture she began to turn inside out again. Hermione frantically swallowed a special devouring cocktail, every second struggling with her own body, which wanted to vomit everything swallowed.

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The girl shuddered from every touch and was ready to finish, but something was in the way, maybe overstrain, maybe shame, or maybe the fear to describe. The Master's hand during orgasm. Trying to concentrate, she realized that the feeling of complete belonging to the Master interrupted everyone else, because she only now felt his strength and her weakness in front of him in full measure.

She is ready and does what he wants, despite the fear, and cannot resist. From such thoughts and emotions somewhere inside, she began to fill with lightness and languor of bliss, the girl completely stopped feeling her body, only this new sensation of flight.

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