Dome Light LED for 2015-2017 Subaru WRX STi

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Availability: In stock

Ships tomorrow if ordered in the next 17 hours and 22 minutes!

  • Red
  • Cool White (6000K)
  • Warm White
  • Blue
  • Green
  • Amber
  • SMF2 (16 lumens)
  • SMF6 (94 lumens)
  • SMD12 Board (118 lumens)
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  • 2015 Subaru WRX STi Dome Light Collage
  • SMF6
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Your dome light, or single light located in the center of the ceiling, uses an incandescent bulb from the factory, giving it a yellowish color. By replacing with an LED, you can add a luxurious and modern look to your vehicle, with a cool white color, just like the lights on newer luxury vehicles. You can also increase the brightness with SMF6 or SMD12 Board, to improve the performance of your dome light.

The installation is 100% plug-and-play, just replace your factory bulb!



SMF2: This bulb has a standard festoon base, with two 5050-size Epistar SMDs and a protective cover for added durability and style. Direct replacement, plug and play.

SMF6: Standard festoon base, with six 5050-size Epistar SMD chips arranged on a rectangular panel. Direct replacement, plug and play.

SMD12 Board: This is an LED panel, fitted with 12 5050-size Epistar SMD chips. Comes with spring-loaded festoon-style adapter for direct installation. Plug the adapter into the bulb socket, then just stick the board in place with the mounting adhesive pad. The board-and-adapter design allows for extremely high brightness compared to a simple bulb.

Included in your order is ONE BULB.


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

You can also select blue, red, green, or amber to add a unique look to your interior. Please note- when ordering these unique colors, we recommend moving to the next-brighter stage for acceptable light output.

Color Reference Banner


Diode Dynamics offers several brightness options so you can choose what fits you best.  These options are listed by the design and the lumen output of each bulb: 

SMF2: Slightly lower brightness than OEM bulbs, but still provides the crisp, modern color of LED.
SMF6: Slightly higher brightness than OEM bulbs.
SMD12 Board: Much brighter than OEM bulbs. These are bright!

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.



LED Components. Diode Dynamics uses only the highest quality LED chips in the production of its bulbs. This means we use 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 31mm Festoon, also known as 3021 2033 3175 6428 6430
Year 2015,2016,2017
Make Subaru
Model STi
Application LED Bulbs
  1. DOME LED - GREAT! Review by SUBIWRX



  2. <3 Review by Moises

    This dome light was amazing. i love the look it gave to my WRX, compared to the old stock one. I purchased the item and when i installed it, will I tell you, I was completely in love with the lights. (Posted on 5/2/17)

  3. Quality product with warranty! Review by dregz01

    I installed all Diode Dynamics LED interior lights on my 2017 STi, it looks awesome! All 6000k. Upraded the look and feel of my car. You should see this thing in person, I really like it. (Posted on 12/11/16)

  4. Awesome Review by Jordan

    I ordered the SMD12 bulb and it was easy to install and easily twice as bright as stock! Awesome products, can't wait for my next order to arrive (Posted on 11/26/16)

  5. Fantastic lights! Review by Trevor

    Installed the SMF6 board in cool white and love the amount of light and the color is perfect! Would definitely recommend anybody to purchase these! (Posted on 11/23/16)

  6. Great Value Review by Thomas

    Lights really change the look of the interior, on top of being practical. Great Valie for the money! (Posted on 11/4/16)

  7. Good looking Review by Guillaume

    Easy install (Posted on 10/24/16)

  8. Great! Review by 2015 WRX

    I bought the green lights (SMF6) in order to get a cool "cyberpunk" look inside my car at night. The red instrument lights of the 2015 Subaru WRX contrasting with the eerie green glow of these Diode Dynamics sets an awesome tone for the ride! They are not obscenely bright, but cast more than enough to make things visible even in the green glow, and look just as cool from outside the car.

    I'd tried a different brand before this, and they were sub par. The Diode Dynamics product is easily superior, and for a better price.

    **Just remember, if you plug your light in and it doesn't work, turn it around. They are LED's (light emitting diodes), which means they're basically check valves for electricity. It will only allow electricity to go one way, so if they don't light up, turn them around. (Posted on 10/13/16)

  9. Amazing quality! Review by George S.

    I had a white LED bulb for my dome light in my 2017 Subaru WRX STI and I wanted a red LED bulb to match my car's dark grey, black & red theme. This bulb was brighter than the red I was expecting and I couldn't be happier. A friend of mine recommended Diode Dynamics and the quality of the bulbs has exceeded my expectations. I would highly recommend this company to anyone wanting to increase visibility and improve the looks of their vehicles. Not to mention, most other companies have 1-2 year warranties for their products and Diode Dynamics has a 3 year warranty which was one of my main selling points. (Posted on 9/17/16)

  10. Awesome quality product Review by Jon

    I ordered the SMF6 bulb in red to go with the color scheme of my car and it looks great. Install took about 2 minutes and it is significantly brighter than the stock bulb. I would definitely recommend this to anyone looking to upgrade the interior light output and quality. (Posted on 6/20/16)

  11. Very pleased Review by Eric

    I purchased the SMF6 dome light in 6K as part of a full interior LED conversion. Light is bright and the colour is awesome. Shipping was fast to Canada with no additional duties. I will definitely purchase again from DD. (Posted on 6/17/16)

  12. Go for SMF6 instead off SMD12 Review by PCHone

    I ordered both the SMF6 bulb instead off SMD12 in 6000K. The SMD12 is overkill and you could see the board under the plastic cover. The SMF6 bulb is much brighter than stock, dispersed the light all over the rear cabin (overflowing to front seats as well) and plugs in nicely like OEM bulb. I returned the SMD12 and happily kep the SMF6.

    DD 3 year warranty is icing on cake as well. (Posted on 3/23/16)

  13. Excellent, Bright LED Dome Light Review by Jeff

    I got the SMD12, 6000K (daylight) balanced. The dome light cover is on pretty tight, so don't use a screwdriver to pry it off as you might crack it or cause damage, use your fingers or a plastic putty knife. Easiest approach is to sit in the back seat, grab the back of the dome light plastic cover and just ease it off- careful to not pry down the entire assembly, just the plastic cover.
    The SMD12 is significantly brighter than stock, and it looks great- very modern. (Posted on 4/7/15)

  14. Super bright board Review by david

    Installed the SMD12 board and it lights up my interior super bright at night! (Posted on 3/28/15)

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!