Interior LED Conversion Kit for 2015-2017 Subaru WRX STi

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Availability: In stock

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  • Red
  • Cool White (6000K)
  • Blue
  • Stage 1
  • Stage 2
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Interior LED Conversion Kit for 2015-2017 Subaru WRX STi

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This interior LED conversion kit in the color of your choice includes:

Stage 1 Kit:

2-31mm SMF2 Map Light LED Bulbs
1-31mm SMF2 Dome Light LED Bulb
1-194 HP3 Trunk Light LED Bulb
2-194 HP3 License Plate LED Bulbs
2-28mm SMF1 Vanity Light LED Bulbs

Stage 2 Kit:

2-31mm SMF6 Map Light LED Bulbs
1-31mm SMF6 Dome Light LED Bulb
1-194 HP5 Trunk Light LED Bulb
2-194 HP5 License Plate LED Bulbs
2-28mm SMF2 Vanity Light LED Bulbs

Diode Dynamics LED Conversion Kits include all of the LED bulbs you need to replace the incandescent bulbs in your vehicle's interior and license plate light applications. It has been tested in your specific vehicle, for perfect fitment, and no guesswork! No modification is required for installation, you simply replace the bulbs! 



This LED package will provide a substantial improvement in brightness compared to stock. For example, the factory 194-size bulbs are 35 lumens each, while the replacement Cool White Stage 1 HP3 Bulbs are 55 lumens and the Cool White Stage 2 HP5 Bulbs are 92 lumens each.

Lumens: BUYER BEWARE! Most sellers just provide "calculated" lumen numbers, based on the maximum potential brightness of the LED chips on the bulb. For example, if a bulb has five 10-lumen chips, they will rate it at 50 lumens. However, this is not accurate, as the design of an LED bulb does not get rid of heat fast enough to run the LEDs at maximum.

These "calculated" lumen ratings are much, much higher than the true, measured light output, so it will look like competitors' bulbs are brighter than ours. This is because Diode Dynamics does not provide inflated "calculated" numbers; we believe it is misleading. We test the actual brightness of the bulbs in our lab, to provide real lumen output measurements. Our measurements are accurate, but they are usually much lower than the misleading "calculated" figures. Please click here to learn more about LED brightness measurement.



These LEDs are available in many crisp, bright colors. Cool white and warm white are the most popular colors, for a modern look, with maximum visible light.

You can also select blue, red, or amber to add a unique look to your interior. If you would like to mix and match colors, please go to the product selection page, and add each bulb to your cart individually. There is no difference in price compared to this preassembled kit.


Color Reference Banner



LED Components. Diode Dynamics uses only the highest quality LED chips in the production of its bulbs. This means only brand-name suppliers such as Epistar, Cree, Osram, and Samsung.

While Diode Dynamics bulbs may look the same as others on the market, most copycat bulbs use economy-grade LED chips in order to reduce costs. This greatly reduces the reliability and overall brightness of the bulb when you compare it to Diode Dynamics.

Construction. Although LED technology allows for extremely long bulb life, the market is flooded with cheap LED bulbs that fail prematurely due to inferior construction. The worst enemy of LEDs is excessive heat, and when bulbs are not designed properly, they do not disperse heat as well, leading to premature failure.

Off-brand, cheap bulbs exhibit poor solder uniformity, high levels of flux in the solder, uneven chip placement, low-gauge terminal wires, poor assembly, and bulbs held together with inferior adhesives. At best, solder joints will crack and fail on low-quality LEDs after a few weeks of use. In the worst case, these bulbs can damage housings as the extra flux and adhesive evaporates and creates a residue on the lens of the housing.

Diode Dynamics bulbs are produced with modern, computerized equipment, and only the best materials, to ensure complete uniformity, high quality, and long bulb life.

All Diode Dynamics products come with a 30-day satisfaction guarantee and a 3-year limited replacement warranty. For more information, please view the Warranty Information page.

Bulb Size 194, also known as T10 W5W W3W 147 152 158 159 161 168 184 192 193 259 280 285 447 464 501 555 558 585 655 656 657 1250 1251 1252 2450 2652 2821 2921 2825 175
Year 2015,2016,2017
Make Subaru
Model STi
Application LED Bulbs
  1. Very kit and easy installation Review by Josh

    Very nice kit and easy installation. These lights give the interior/plates a nice polished and finished look. (Posted on 9/25/17)

  2. A tad bit pricey,but you get what you paid for. Review by Kelvin

    The price on these is pretty high for what they are. Theyre just led lights. However the quality is very high and install was easy. I just installed them so wont know about durability yet but out of the packaging they were high quality leds. Bright light output as I got the stage 2 set, and overall very satisfied with the leds. Diode dynamics has proven themselves as a high quality brand so far and I recommend their leds. (Posted on 9/22/17)

  3. A small but substantive upgrade Review by S.S. Donovan

    A purely-aesthetic modification which goes a long way. It's 2017 - we can do better than putting up with incandescent lights in every application of our cars. Going with a reputable manufacturer like Diode Dynamics was a no-brainer for me. The interior of the WRX now looks like that of a fine automobile - which it is - rather than an glorified economy car. Thanks! I'll be going back to D.D. when I'm ready to invest in an LED turn-signal solution. (Posted on 6/4/17)

  4. Easy upgrade Review by Brendan

    Super cheep and easy upgrade for the pathetic stock interior lights and license plate. License plate lights are so bright they light up the ground at night on the stage 2 and have a slight cut off lol. (Posted on 5/26/17)

  5. Greta product! Review by Nick

    Great L.E.D. setup. My interior looks so much cleaner and brighter at night.

    License plate light looks great too!

    I'll be buying more to replace other bulbs (Posted on 3/4/17)

  6. Amazing Review by Jetheli

    The OEM interior and rear license lighting in my 16 WRX were pathetic. I would turn the lights on in the car and I still wouldn't be able to see a thing. Meanwhile the halogen license plate lights were lacking aethestically. Did a full LED swap with the cool white in stage 2. These lights perform great. Must have in my opinion. (Posted on 2/20/17)

  7. 2017 WRX Interior Swap Review by aluminumonkey

    Was less than impressed with the light output of the factory interior lights and wanted something more. Decided on the interior kit from Diode Dynamics because they had the right price and warranty I was looking for. I can now see everything when I turn on any of the lights.

    Light output is uniform and colors are not washed out. I will be doing the full exterior when it warms up. (Posted on 1/16/17)

  8. 2015 Complete Interior LED Swap Review by Senfinger

    First order with DD- and already extremely impressed so far with the Product and Customer Service. Originally purchased LEDs from a local and was very unimpressed with the white/BLUE look almost 7000k and was tempted to go back to stock. So I researched LED Companies and kept hearing about this one in particular- I decided to give them a shot and do everything but High Beams and Fogs for now (They are next)- I can honestly say they are probably the closest to OEM quality, look amazing and look the way they should- The interior lights are perfect bright white on the 6000k. So happy to have a high quality LED lighting company to deal with, to many more years! (Posted on 12/4/15)

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!