Low Beam HID Conversion Kit for 2008-2013 Kia Optima

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Availability: In stock

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  • Direct replacement for factory bulb
  • OEM-grade ballasts for superior reliability
  • Double output from factory halogen
  • 3000K
  • 4300K
  • 5000K
  • 6000K
  • 8000K

Optional: Harness which powers HIDs directly from the battery, instead of factory wires. Recommended for best reliability.

These are extra dust caps which have been pre-drilled with 1" holes, suitable for standard HID bulb grommets. Eliminate the effort from your installation, and keep your factory dust caps intact! Included at no extra cost with your HID Kit.

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Low Beam HID Conversion Kit for 2008-2013 Kia Optima

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  • 4300K Headlight and Fogs
  • The blue comes from my camera auto balancing
  • Bulbs and Ballasts
  • Ballast
  • Ballast
  • Ballast
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Diode Dynamics is pleased to offer the HYLUX HID Conversion Kit. After years of experience in the industry, we have assembled this kit, made up of the absolute best components on the market, to provide reliable operation at an OEM level of quality.


The ballasts are the most important component of an HID kit, as they provide the power. After years of providing midrange and even high-quality ballasts for vehicles of all makes and models, Diode Dynamics identified a company called HYLUXTEK as the very best manufacturer in the industry. Their newest ballast, the 2A88 slim, is simply the best aftermarket ballast on the market. You will see other high-end retailers carrying this same ballast, usually under their own brand name, for a much higher cost.

Controller Chip. Most digital (DSP) ballasts on the market still use generic chips, which are cheap, and work pretty well. However, when you need maximum quality, you need a new computer chip designed for one purpose. This is known as an Application-Specific Integrated Circuit (ASIC). These ballasts use brand new DSP ASIC chips for maximum efficiency and brightness, fast warmup time, and extremely stable operation. To prevent counterfeiting, HYLUX has even included a fully-sealed transparent window in the ballast, showing the ASIC inside.

CAN-BUS. Some vehicles have systems which sense the power consumption. Since HIDs use less power than factory halogen bulbs, this can cause issues. You can resolve this by adding capacitors, known as warning cancellers, or some ballasts come with them built-in. However, sometimes that's still not enough to trick the vehicle! To fix it, this ballast has an industry-leading CANBUS module, capable of smoothing PWM signals up to 100hz, and providing feedback to the vehicle to equalize the load, to defeat even the most troublesome modern CANBUS systems. Even if your vehicle does not use a CAN-BUS system, these modules will provide extra power smoothing for reliable operation. Simply put, this ballast will work on any vehicle, the first time you plug it in. With this kit, you don't need to worry about capacitors, warning cancellers, or resistors.

Igniter and Startup. You may have heard of ignition issues with other ballasts, caused by an igniter that is too small to withstand cold temperatures. No reason to worry with these ballasts- the oversized 24kV external igniter means that you will never have an ignition issue, even in the coldest temperatures. Additionally, the ASIC chip in these ballasts means that you only need 4 amps at nominal voltage to start up. These ballasts consume less power than any other on the market, meaning 100% reliable and fast startups, every time.

Case. These ballasts are the smallest you will find, about the size of a pack of playing cards. The case is fully potted, or filled with epoxy, which makes them fully waterproof and shockproof. This material is expensive, so most ballasts on the market are only given a coating, or partial fill. HYLUX ballasts are completely filled to the top, sparing no expense to ensure longevity. If you take off the back cover on this ballast, you'll see what we mean!



The bulbs included with Diode Dynamics kits are CNLight bulbs, which are widely regarded as the most dependable aftermarket bulbs on the market. Just like the HYLUX ballasts, you will see other companies offering these same bulbs under their own brand name. They provide superior life, brightness, and color attenuation when compared to generic HID bulbs, like those found in most cheaper kits on the market. With these bulbs you won't have any issue with bulbs not matching in color, or flickering, which is common in cheaper bulbs. The one-piece base design prevents any issues with separation over time, making the entire bulb extremely reliable.



You may choose to include a heavy-duty relay, to power your HIDs directly from the battery, instead of the factory wiring. This relay has been designed from scratch, and utilizes a fully-sealed, waterproof relay, with flyback diode, and even has a built-in capacitor for input power smoothing. All wires are sleeved with braided techflex for an attractive appearance and extra protection. The input wires are each a meter long, and the output wires are one meter and two meters, which means the wiring will be long enough for even the biggest vehicles. The single-ground design makes installation easy. This relay was designed with reliability, convenience, and long-life in mind.

A relay wiring harness is not required for operation of the HIDs in most vehicles, however, please be aware that some vehicles do require it for operation. If you're not sure, just include it with your order, and you can always return it for a full refund if you don't need it! 



The CNLight bulb temperatures are rated accurately in correlated color temperature at 35 watts, and have an industry-standard 3000 hours of estimated bulb life. Please be aware that most HID bulbs are rated inaccurately from other manufacturers. 8000K is not dark blue, and 6000K is not pure white! We provide accurately-measured colors with a range of options to suit your taste.



3000K is our lowest temperature, and has a pure yellow output, which is great for use in fog lights. 


4300K is a natural white output, as seen on vehicles with factory HIDs. It will not have any blue tint to its color, and might appear slightly warm.


5000K is a pure white output, without any warm hint, and no blue either. It may not be available in your specific bulb size, in which case it will not be shown as an option.


6000K is our most popular color, which produces an ice white color. It has a very slight hint of blue, and matches best with most LEDs.


8000K is our highest temperature, which produces an ice blue color. This is not a strong blue color though- it is still primarily white, meaning there will be no decrease in light output.

HID Color Reference



Our warranty is through Diode Dynamics, LLC, so you can be assured that you will get fast and friendly service should you have any problems. There is a full-replacement 3-year warranty on all HID Kit components, including HID Bulbs, Ballasts and Relay. 



We carry our own inventory, so no waiting for them to be shipped from overseas, or waiting on big, unreliable suppliers to ship them. They ship right from our own inventory, in St. Louis, Missouri, usually the same day you order.

Kit comes with:

  • One pair CNLight HID bulbs in your choice of bulb size and color
  • Two 35w super-slim ballasts (HYLUX 2A88 Slim CANBUS)
  • One Premium Waterproof Relay (optional)
  • Mounting hardware for ballasts (3M mounting pads)
  • Three-year replacement warranty 
  • Free Diode Dynamics decal
  • Diode Dynamics 30-day satisfaction guarantee
Bulb Size H11b
Year 2008,2009,2010,2011,2012,2013
Make Kia
Model Optima
Application Low Beam
  1. Well Worth The Money Review by Cory

    I was nervous about buying this product since it runs 150 bucks. I've always been one to buy eBay kits for around 40 bucks. I decided to pull the trigger with Diode Dynamics and I love this kit. These don't look like the tacky eBay bulbs. These look just like factory HIDs you see on BMW's, Lexus, etc. I was told to get the Check Engine Light Warning Cancellors and I would recommend the same. Just call and ask them to throw that in on your order. It's 10 dollars per bulb and keeps the lights from flickering and your CEL from coming on. The install was straight forward and shipping was very fast. A great company and VERY great customer service. I would definitely recommend this product! (Posted on 11/10/15)

  2. 2013 Optima Review by Danny

    Great product. Amazing customer service! Save time and buy the warning cancelers. (Posted on 8/18/14)

  3. Great quality. Review by DSur

    Diode Dynamics is the real deal. Great customer service. Make sure you get the warning cancelers!
    (Posted on 8/17/14)

  4. 2011 Optima Review by H Kold

    Got the 6000k for my wifes car is she loves them. We did have a ballast issue but Michael N. quickly dealt with the problem. Hopefully we are all done with that. Anyway my wife has since bought the kit for my motorcycle and I'm looking forward to installing them.
    (Posted on 6/22/14)

  5. 2014 Kia Optima Review by Nicole

    These Lights are the best. I purchased the 6000k system along with the HID Relay and the DRL Warning Cancelers and its a beautiful thing.. My lights are crisp and clear with a little hint of blue. Very happy with my purchase and will continue to but from Diode Dynamics!!!! (Posted on 1/28/14)

  6. Great product, great customer service. Review by Winchester

    Installed the 6000k on a 2013 EX. The install went super smooth. With the video it was a breeze, except for the driver side was sort of a pain because of the limited hand space. I am very happy with quality of the product and the results. It really improves the look of the car 100%. I wouldd suggest getting 6000k switchbacks to match!

    I did encounter one problem- the HIDs stopped working about a week after I installed them. I guessed that it was the relay, contacted Diode Dynamics customer service and they had a new relay overnighted to me within a couple hours - for free. I replaced the bad one the next day and everything has been working flawlessly ever since! (Posted on 1/21/14)

  7. 6000k on a 2009 kia optima Review by Mike

    I'm very happy with the product and is exactly how I wanted my headlights to look they now match my 06 cbr 600rr. Price is a little high but the quality of the kit is well worth it. Only problem I had was after about 30 mins after install my tpms and engine light came on I installed them yesterday around 3pm and now this morning no light are on so I'm not sure what that's about but either way I'm very happy next up led reverse lights and led license plate lights (Posted on 1/19/14)

  8. Great HID'S!! Review by Jesus

    Right off the bat I got a great impression of the product in its shipping container. Truly shows the care and quality of their product. I went with 4300K bulbs that give off a pure white light which is a must have on any road. Adds WOW factor to the front end and gives the perfect combination of form and function. You will not be disappointed.

    FYI... don't struggle like I did putting in the HID'S by not removing the bumper. It will save you time and frustration by taking off the bumper....Your back and fingers will thank you (Posted on 12/21/13)

  9. Huge Upgrade Over Stock Review by Nick (North Texas KDM)

    I have a 2013 Optima EX. My car came standard with projectors, but not HIDs. It is one of the things that kept the front from looking as high end as the rest of the car. I went with the 4300K because I didn't really want a blue or yellow tint. When looking at the light it looks pure white, with maybe a slight hint of yellow. However, the light it puts out is a clean white. It makes a huge difference on dark roads over the stock bulbs.

    I do not have DRLs on my Optima, but I did have flickering. I ordered the warning cancelers, plugged them in and the problem was solved. Diode Dynamics did a great job of getting the parts to me fast, as always. (Posted on 8/15/13)

  10. 6000k low beam hid kit with relay Review by John

    Let me first say how fast and easy delivery was and it was nicely packed.
    It really wasn't to hard to install watching the video.
    Took about hour and a half.
    Amazing product, I recommended it to all my friends! (Posted on 7/26/13)

  11. Great Lights Review by Rock

    I have a 2011 kia optima LX. I ordered the 6k HID lights from here and could not be any happier. I received my order in 3 days which was great! The color is amazing nice crisp white with a hint of blue. Makes all the road sign and markers glow so I know exactly what's ahead of me while driving. The spread is nice I get about 50ft in front of me of clear vision. I say its better than my stock lights before. Overall this product is an absolute win. highly recommend it to anyone looking for a solid HID kit. Also order the relay harness. (Posted on 6/9/13)

  12. Great product! Review by Jason

    Found this product on optimaforums, decided to give them a try over another website selling same product. first of all website looks very professional and easy, description of items is great. Ordered product on a sunday, received it wednesday. Took me maybe a good hour with ABSOLUTELY no wiring skills to hook it up, but when everything was hooked up, turned engine on, MY HID'S WHERE FLICKERING! i was pissed! i had no DRL's on my car so decided to give them a call for troubleshooting, spoke with a very nice guy who immediately answered "i know exactly what your problem is", he said that is isnt common with optima's without DRL's and said that i need warning cancellers, so i went and ordered them, they got to me in 3 days from ordered, rehooked everything back up an **VOILA** super bright HID lights. HID's are a million percent better than normal lights, different is like night and day, you will love driving at night.

    moral of the story: dunno why i needed warning canceller's with my setup, but to be sure, just get a pair too! its only 20 dollars more, better than hooking up and flicking and removing the whole setup again while waiting for the cancellers. get the whole shibang.

    A+++ product and vendor. Loved their product so much i put their decal on my back window :) will highly suggest them for fast shipping, wonderful customer service and quality products! :) (Posted on 2/15/13)

  13. 2013 Optima EX Review by Glenn

    I bought these low beams, in addition to the fog light kit Diode sells. I bought the 4300K and they match the fog lights perfectly. You will need the relay (as well as a separate relay for the fog lights).

    I called their customer service and they immediately answered my question and pointed me to a few youtube videos that assist with the installation.

    Go with these HID kits, you will not be disappointed! (Posted on 11/27/12)

  14. 2013 Kia Optima Review by Jonathon

    Lows installed yesterday and they look great. Match the 6000k fogs perfectly. Thanks Diode Dynamics. (Posted on 11/10/12)

  15. a+++ Review by Jeremy

    great product and shipping was fast. ordered on a thursday and arrived on saturday. kit came with everything i needed. nice plug and play kit. (Posted on 11/10/12)

  16. Well worth it Review by Justin

    I recently purchased/installed this kit with the 4300k bulbs. The difference is amazing. I had little problems installing with the added relay. I had some slight flickering on the passenger side at first. After I reset the power and ground to different locations that went away. Even the 4300k have a slight blueish tint in the Optima projectors. This is not seen when viewing from the car. It is pure bright white light with a great "throw".

    I would highly recommend this product over cheap imitations.
    (Posted on 9/18/12)

  17. Great Product Review by Tommy-Westside

    Shipping was fast (3-4) days until it arrives but once it does the product itself is great! Only problem with the whole process was removing the bumper off of the Kia Optima. But overall the product is amazing and it is bright enough and the colors are exactly the same as advertised. (Posted on 8/17/12)

The installation of HIDs consists of three main steps, which are the same for every vehicle. The process is quite straightforward:

  • -Remove factory bulbs and replace with HID bulbs
  • -Connect ballast to bulb plugs
  • -Mount ballast and clean up wiring


The following video shows installation on a Scion FR-S, which is very comparable to installation for most vehicles. The only tedious part for some vehicles will be accessing the bulb itself. Please check your manual, as some vehicles require the removal of the front bumper cover. Still, the installation should only take 60-90 minutes.

Worry-free warranty

  • -Full 3-year warranty on all products
  • -No waiting: we usually send new items out with a return label (US customers only)


You will get quick help from our trained staff for any issues.

All Stage Series products carry a limited 8-year warranty.

For further details, please see our full article.

Domestic (US) Customers

  • - Same-day shipping for all orders placed by 12:00 PM CST (or until 4 PM with rush processing)
  • - USPS, for delivery in 3-5 days (on average)
  • - Express services are available, see exact pricing at checkout
  • - Fully Insured


International Customers

  • - We ship to all countries via standard mail
  • - Usually around $10 for LEDs, or $25 for HIDs.
  • - Choose your service on checkout to see exact prices:
  • - USPS 1st Class: 2-5 weeks
  • - USPS Priority: 1-2 weeks
  • - Express EMS: 1 week
  • - Please email us if you are unsure about shipping to your country.

You will receive updates from our site when your order is shipped, along with a unique shipment number to ensure that your order is correctly accounted for. This allows you to easily reply to us if you have any concerns.

Whether your order is big or small, it is tested through many run cycles, and each bulb is tested before shipment. Every single bulb. Every time. And if anything does go wrong, you can rely on our industry-leading warranty for worry-free replacement.

If you're not happy with your items, we want to make it right. So we have some pretty awesome return policies:


30 day return policy. All customers have 30 days from the date of original order shipment to return items.

Full refund, no fees. At Diode Dynamics, we offer free returns. That means no restocking fees, no administrative fees, and no hassle!

 Free return label. If your original order was over $50, you get a free return label for your items (US customers only). If your order was less than $50 or international, you can send the items back through your preferred method.


Within 30 days: If your original order was over $50, you can get new items shipped to you with a return label (US customers only). If your order was less than $50 or international, we can send you the new items first, but you are responsible for returning the old items.

Within 90 days: Any item can be returned for exchange or store credit within 90 days. The buyer is responsible for the cost of the return shipping, and must first return the old items. We'll still cover the postage for the new items.


Please note: due to the nature of custom acrylic pieces, we cannot offer any refund or exchange for returned custom acrylic items.


To make a return or exchange, please request an RMA, or give us a call. When we get it back, you will be notified and credited appropriately.

Again, all returns must be approved, with an RMA. This is so that we can process your return as quickly as possible when we get it. If you would like to return an item, please Request an RMA. Please include as much information as possible about the reason for return.

Alternatively, you can also send us a message, or give us a call!