8IH = HID. 8EX = LED, entry unit in the context of B9. 8IT = LED, could be non-matrix, could be single zone matrix, could be multi-zone matrix. 8IY = matrix LED. 8IZ = matrix LED + laser light. For B9.0, 8IT could be matrix or not. You need to know the 8G_ code to determine which.
A xenon HID lamp wears out faster when it gets turned on and off frequently, and not because of how long it is used. Thus, the life of a xenon HID lamp can be extended by not a turning it on if it has just been turned off. Xenon gas-filled headlights. A xenon gas-filled bulb is simply a halogen bulb that contains xenon instead of halogen. It is
BMW Z4. E85/E86 (2002–2008) E89 (2009–2016) Apart from “xenon,” you might’ve come across the term “bi-xenon.”. It refers to the very same technology, only configured in a different way. Whereas in xenon headlights there are separate bulbs used for low and high beams, in a bi-xenon setup there is only one bulb for both.
In summary it is not permitted to convert an existing halogen headlamp unit for use with HID bulbs. The entire headlamp unit must be replaced with one designed and approved for use with HID bulbs and it must be installed in accordance with the [omitted in this post] rules stated above."

The Altima doesn't have projectors, it just has "ordinary" HID lights. The HID lights have an arc inside a bulb filled with xenon, so they are sometimes called "Xenon lights". They have to have additionaly electronic parts, including a ballast, to generate high voltage for the arc- that's why they cost more.

The benefits of xenon lights are that they are much brighter and last longer. The number one reason to use them, however, is for safety. Xenon headlights typically allow you to see two to three times further ahead than halogen headlights. You will also be able to see better in inclement weather and at night.
These are a pair Non AFS Jeep Grand Cherokee Bi-Xenon LED OEM Headlights or aftermarket headlights made to OEM specs that come with all components. Jeep owners now have the option to select OEM vs aftermarket headlights. Aftermarket headlights only have a standard 1 year warranty. OEM headlights only have a standard 3 year warranty. As of 08/30
Also, xenon bulbs are not just brighter, they are equally whiter than halogen/traditional bulbs. Xenon bulbs use a lesser amount of energy to produce super-efficient and brighter illumination than any other type of bulb you may have on your vehicle. However, upgrading to xenon bulbs is pretty expensive; then again, not all cars are designed to

Xenon High-intensity discharge (HID) lights, on the other hand, are electrical gas-discharge lamps that produce light through an electric arc between tungsten electrodes. HIDs have a longer lifespan than Halogens, as the light being emitted is produced by using electrodes to charge the white xenon gas inside the bulbs—unlike halogens that use

Due to having high-intensity xenon headlights, BMW headlights can be pricey to replace. Xenon or HID headlights came out over 15 years ago and are mostly used on luxury cars. An assembly without a bulb runs about $2,000 if you’re replacing the bulbs too and add another $500 for the pair.
Xenon lights work a bit differently to standard halogen bulbs and actually require two core components to work. The first component is what’s referred to as a ballast . This is essentially a power converter which takes the normal 12V DC power from your car, and fires out 23,000V to ignite the second component…the bulb.
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    • difference between xenon and non xenon headlights