What is the low beam headlight bulb size for a 2015 Subaru Legacy?

The 2015 Subaru Legacy uses a HID-D4S LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2015 Subaru Legacy?

The high beam bulb size for the 2015 Subaru Legacy is 9005 LED.

Why are my 2015 Subaru Legacy headlights dim?

Dim headlights on a 2015 Subaru Legacy can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a HID-D4S LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2015 Subaru Legacy fog light?

The 2015 Subaru Legacy uses a H11 LED bulb for the fog light position.

Is the 2015 Subaru Legacy single or dual beam?

The 2015 Subaru Legacy uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2015 Subaru Legacy?

Yes, the 2015 Subaru Legacy comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a HID-D4S LED LED conversion kit for the low beams.

Does the 2015 Subaru Legacy have fog lights?

Yes, the 2015 Subaru Legacy takes a H11 LED bulb for the fog light position.

Did the 2015 Subaru Legacy change headlight bulb sizes from the previous year?

Yes — the 2015 Subaru Legacy uses different bulb sizes than the 2014 model. The 2015–2017 generation introduced this bulb configuration.

Is the 2015 Subaru Legacy the first or last year to use HID-D4S LED bulbs?

The 2015 Subaru Legacy is the first year in the 2015–2017 generation to use the HID-D4S LED bulb for the low beam headlight.

How do I change the headlight on a 2015 Subaru Legacy?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old HID-D4S LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2015 Subaru Legacy?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved HID-D4S LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2015 Subaru Legacy headlights?

A pair of HID HID-D4S LED bulbs costs $50 to $150. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2015 Subaru Legacy?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the HID-D4S LED position are available as direct plug-and-play replacements.

The 2015 Subaru Legacy is the first model year to use this bulb configuration (2015–2017).

Fitment Guaranteed for 2015 Subaru Legacy

What Size Bulbs Does a 2015 Subaru Legacy Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

$50 - $150 (HID System)

What Lighting System Does the 2015 Subaru Legacy Have?

When it comes to nighttime visibility, the 2015 Subaru Legacy relies on an arrangement of 15 specialized bulbs. It features an extensive lighting system powered by premium factory HID/Xenon technology utilizing D4S projector housings for high-intensity output. This model belongs to the late years of the Legacy's 1990-2022 production span.

Can You Put LED Bulbs in a 2015 Subaru Legacy?

The 2015 Subaru Legacy is already equipped with factory D4S HID/Xenon headlights. Since HID technology already provides exceptional brightness, we recommend staying with high-quality OEM replacement bulbs rather than attempting an LED retrofit for the primary headlights. However, the H11 LED fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.

2015 Subaru Legacy Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	HID-D4S LED	Buy HID-D4S LED →
High Beam	9005 LED	Buy 9005 LED →
Fog Light	H11 LED	Buy H11 LED →
Brake Light	LED Bulb	Buy LED Bulb →
Side Marker	168 LED	Buy 168 LED →
Turn Signal Front	7440NA LED	Buy 7440NA LED →
Turn Signal Rear	7440NA LED	Buy 7440NA LED →
Reverse Light	921	Buy 921 →
Dome Light	DE3175	Buy DE3175 →
License Plate	168	Buy 168 →
Map Light	DE3175	Buy DE3175 →
Parking Light	LED Bulb	Buy LED Bulb →
Trunk Light	194	Buy 194 →
Daytime Running	9005	Buy 9005 →
Door Light	168	Buy 168 →

How do the 2015 Subaru Legacy's bulbs compare to other years?

The 2015 Subaru Legacy changed bulb sizes from 2014. The previous model year used a different configuration.

The 2016 model continues with the same bulb sizes.

This bulb configuration covers the 2015–2017 model years. ← 2014 2016 →

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Other Legacy Years

2022 2021 2020 2019 2018 2017 2016 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990

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