OLM Headlight Low Beam Alpha HD (Philips Z ES)

2015-2020 Subaru WRX & STI / 2014-2017 Forester / 2013-2021 Crosstrek / 2013-2016 Scion FR-S




OLM's Alpha HD bulbs utilize 8 Philips ZE S LED chips to put usable light on the ground. Here's a great plug and play solution for owners with standard halogen headlights.
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The first commercial halogen lamp was developed around 1959. In most applications they're easy to recognize due to the high heat and orange light output. They also have a lower life span with lower light output per watt. Prior to recent years technology was not advanced enough to use LEDs to replace headlight bulbs. The low output made it simply dangerous. OLM's Alpha HDs continue and build upon past generation OLM bulbs and provide usable light output with a beautiful, premium look.

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: This is for vehicles NOT equipped with LED low beams or HID low beams.

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

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.

7 customer reviews

Average rating
(based on 7 reviews)
Ease of Installation
Fit / Quality
Overall Satisfaction
  1. Great Upgrade!

    By Christopher April 24, 2018

    I bought these lights as an upgrade to the ugly stock halogens. The install and adjustment was very easy and only took about 15 minutes if that. What a gigantic difference! The lighting is greatly improved and the color is perfectly white. Everything is lit up so well down the road. Next step is upgrading the foglights

  2. OEM Alpha HD bulbs

    By Jose October 29, 2017

    Great product....

  3. Halogens make me sad.

    By Eric August 28, 2017

    I was a bit concerned about installing LEDs in the OEM headlight housings that were designed for halogens. These bulbs are a good upgrade. The cutoff is more sharp than the stock bulbs, but the 5500k lights up the road much better. It was necessary to remove the gaskets that come with them and use the ones from the original bulbs. Ordering the matching high beams today.

  4. Great Headlight Bulbs

    By Jeremy July 5, 2017

    I got these bulbs to replace the OEM halogen bulbs. They are certainly bright and outline the road perfectly! HID might be brighter, but I don't particularly like HID lights anyway. Installation was easy enough but getting them to fit properly took a little doing. You have to twist them slightly to fit into the grooves, just make sure you don't twist too hard. Overall extremely bright bulb, much brighter than OEM. I would recommend these to anyone looking to update the bulbs and upgrade the style of the WRX.

  5. Good Headlights

    By Kevin June 5, 2017

    Not quite as bright as the the HID/LED headlights, but it's the runner up. Much easier to install though.

  6. Grear Product , Easy Install

    By Joshua March 15, 2017

    Only took about 15 minutes to install both headlights , Really enjoying the brightness of the headlights so much brighter then the stock one. I suggest this upgrade.

  7. Brightest Lights.

    By JEFFREY January 10, 2017

    These headlights are a lot brighter than the stock ones. The ultra white lights look really clean.

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