Low Beams

OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD - 15+ WRX / STI (Fog) / 14+ Forester / 16+ Crosstrek (SRF) / 17+ Impreza

OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD - 15+ WRX / STI (Fog) / 14+ Forester / 16+ Crosstrek (SRF) / 17+ Impreza



SKU: olm-alphahd-dual-purpose

Out of Stock Discontinued

This dual purpose bulb emits 6000k and 3000k light (see pictures) for brilliant light in normal and inclimate weather. Turns on in 6000K. Simply cycle the lights once for 3000K output and again to return to 6000K.

Sold as a pair. No housings included. This model is appropriate for most low beam and fog light H11 applications. Can also fit H16 fog light applications. For a vehicle with H11/H16 low beams and fog beams, a quantity of 2 is required to replace all 4 bulbs. For bulbs to reset automatically to white, they must be off for approximately 45-60 seconds.



The 19w bulb* from the factory produces an orange light and only has enough intensity to light up the road a few feet ahead.

The typical LED bulb that you see looks great in the reflector when viewing the vehicle, but they don't really put out much usable light. Even less than the 19w stock bulb.

OLM has a bulb which has a higher output and whiter light. Most people will not use fog lights for the sole purpose of navigating through fog. Many areas are not even prone to fog. A large percentage of users can benefit from a driving light vs a fog light. Placing more light on the ground during normal driving can increase a driver's situation awareness as well as those around them.

The base of the light is adjustable so you change the focal length resulting in the best output. The heat sink is also reversible in case your application demands the bulb to conform to a different profile for proper fitting.

NOTE: If your WRX / STI was made for the Australian market, we cannot recommend this bulb. The design of the fog light housing for this market is different. The housing contains an additional P13W bulb which may interfere with this one.

Crosstrek owners WITH steering response fog lights (SRF) can use this bulb. However, for Crosstrek owners WITHOUT these, you can purchase our lamp assemblies which will modify your light to an H11 socket (ie Glass replacement fog light housings).

Does not fit low beam applications on vehicles with factory LED headlights.

Dual Purpose Features

This model allows for a warmer output when you desire a light with higher contrast vs a white backdrop (snow or rain). Many vehicle operators feel safer navigating less than favorable weather conditions with a lower temp bulb.

The bulb activates in 6000K mode initially. Turn the light off and on again within a few seconds and it will turn to 3000K. To switch back to normal just cycle the lights once more. No additional wiring required. The bulb remains plug and play like any typical replacement bulb.

The Kelvin scale used to measure the output is more standardized vs the typical automotive scale. While many 3000K bulbs are advertised in the industry as a deep yellow, the actual output is a warm white.

NOTE: For bulbs to reset automatically to white, they must be off for approximately 45-60 seconds.

Crosstrek Showcase Video

SubiSpeed Video

Compatible with:

  • OEM fog light housings
  • Glass replacement fog light housings
  • OLM Bi Xenon Projector housings

Warranty: 1 year
IP rating: IP67
Minimum Light Output: 3520 lumens per pair
Maximum Light Output: 4000 lumens per pair
Approximate Wattage: 20-25 watts each


HIDs are great for certain applications. A small, thin plastic housing is NOT one of them.

This controlled testing shows the results of a 35w HID kit mounted inside the stock 2015 WRX / STI fog light housing.


In the picture below, you can see the extent of the damage on the inside of the casing.

For this application, the OLM HP LED fog light bulb is a great solution. It also results in much less glare than an HID kit.

Phillips Z ES LED Chip

LUXEON Z ES is a high-power 1.6mm x 2.0mm LED that enables never before seen color consistency, luminance, flux density and design flexibility for lighting solutions because it's the first ever 1-step MacAdam Ellipse warm white LED. LUXEON Z ES is undomed, a feature that provides un-matched optical flexibility for precise beam angle control. Tested and binned at application conditions, 85°C, the LUXEON Z ES emitters are an ideal choice for indoor and outdoor light sources requiring superior beam angles and superior results.

The OLM Alpha HD setup uses 8 of these precision chips to make for a competent replacement for OEM halogen bulbs.

Current Draw

Efficiency is high on this bulb's list of positive traits. As seen in the picture, at 13.5V this bulb is only drawing 1.5 amps. Power is 20.25W at this temperature.

Tuned Light Output

Straight out of the box, the OLM Alpha HD offer superior total light output and uniform color. With the adjustable base, you can rotate the light as required to change the focal length and aim of the LED chips. This ensures that the setup results in usable light which will help guide you through the hours of dusk and night.

The heatsink is also reversible if your application demands more space towards the rear of the bulb.

Plug and Play Installation

Installation of the H11 OLM Alpha HDs is extremely simple. If the socket fits, that's where it goes! The LED driver to bulb connections come with rubber seals to make sure the connection remains watertight.

The kit comes with an allen wrench for modifying the focal length of the bulb. Simply loosen the screw and rotate the base until it is in the desire position. Once you are satisfied with your setup, tighten it back down. Do not overtighten.

The allen key can also be used on the heatsink to reverse the orientation to create extra space towards the rear of the bulb.


With OLM products, for a period of 1 year after the purchase, just e-mail us here and let us know about your issue.

Our trained staff will troubleshoot the product with you if required. They usually ask for a photo or two. If the issue still exists, we send you out a new item free of charge! You will not have to pay shipping to return your item or receive another.

SubiSpeed only offers HID relays when they are possibly required. We have tested the current draw of this kit and found that it does not exceed the factory wiring.

*some Subarus with Steering Responsive Fog Lights are equipped with 55w

This Part Fits

  • 2015-2017 Subaru STI OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD
  • 2015-2017 Subaru WRX OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD
  • 2014-2018 Subaru Forester OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD
  • 2017+ Impreza 4D OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD
  • 2017+ Impreza 5D OLM Dual Purpose LED Low Beam / Fog Light Bulbs Alpha HD


Additional Information

Installation Instructions No
Additional Warranty Information No

4 customer reviews

Average rating
(based on 4 reviews)
Ease of Installation
Fit / Quality
Overall Satisfaction
  1. 5min install

    By DW April 21, 2018

    Ordered and they got here on time. Installed both with ease only to find out one arrived to me dead. Had to send in video proof of failure. After being told I was being sent a replacement it was sent to the completely wrong address. So now a week or so later I'm still stuck with one light not working and the other a whole state away. Now I have to coordinate with someone else to get it sent to my shipping address. What a pain.

    As for installation you do not need to remove the battery like the previous review suggests. Under each side of the car is black plastic. Remove 3 pop clips and 1 screw and bam you have access to the light.

  2. Just awesome

    By HazTac February 23, 2018

    Wow! These lights light up super bright in both lighting options. I put a pair for both my low beams & fog lights. I'm super happy with them. I'm glad my co-worker put me onto the subispped site.

    2018 Crosstek

  3. Easy to install but...

    By MJ November 22, 2017

    Over time, maybe about 3-4 months after one of the fog lights turned defective and started either showing 3k light when the other one was showing 6k (on startup) and then sometimes it wouldn't even turn on, it was weird. I've tried resetting it and usually it would work but it's become a hassle to do it all the time. I definitely liked it and I would've expected better quality since I paid more but maybe I should've bought the cheaper ones instead so I can just replace it if it goes defective.

  4. Anyone can Install with ease

    By Jovanny June 08, 2017

    Really easy to install, took about 25 minutes. You might want to remove the car battery to make the installation a lot easier.

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