What is the low beam headlight bulb size for a 2017 Subaru WRX STI?

The 2017 Subaru WRX STI uses a LED Bulb bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2017 Subaru WRX STI?

The high beam bulb size for the 2017 Subaru WRX STI is 9005 LED.

Why are my 2017 Subaru WRX STI headlights dim?

Dim headlights on a 2017 Subaru WRX STI can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a LED Bulb LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2017 Subaru WRX STI fog light?

The 2017 Subaru WRX STI uses a H11 LED bulb for the fog light position.

Is the 2017 Subaru WRX STI single or dual beam?

The 2017 Subaru WRX STI uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2017 Subaru WRX STI?

Yes, the 2017 Subaru WRX STI comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a LED Bulb LED conversion kit for the low beams.

Does the 2017 Subaru WRX STI have fog lights?

Yes, the 2017 Subaru WRX STI takes a H11 LED bulb for the fog light position.

How do I change the headlight on a 2017 Subaru WRX STI?

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 LED Bulb 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 2017 Subaru WRX STI?

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 LED Bulb 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 2017 Subaru WRX STI headlights?

A pair of halogen LED Bulb bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. 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 2017 Subaru WRX STI?

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 LED Bulb position are available as direct plug-and-play replacements.

This vehicle is part of the 2015–2017 Subaru WRX STI generation. All models in this range share identical light bulb sizes.

Fitment Guaranteed for 2017 Subaru WRX STI

What Size Bulbs Does a 2017 Subaru WRX STI Use?

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

Installation Difficulty

Moderate (Dust covers often present)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 2017 Subaru WRX STI Have?

Owners of the 2017 Subaru WRX STI will find a total of 13 lighting elements throughout the vehicle's exterior. It features an extensive lighting system powered by factory-integrated LED technology, which offers superior longevity and a modern cool-white appearance compared to traditional bulbs.

Can You Put LED Bulbs in a 2017 Subaru WRX STI?

Upgrading to LED is one of the most effective ways to modernize your Subaru's appearance and safety profile. We recommend starting your upgrade with the LED Bulb low beams, as they see the most use. Adding a matching 9005 LED LED kit later will complete the look and ensure consistent lighting performance. Don't forget the H11 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2017 Subaru WRX STI Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	LED Bulb	Buy LED Bulb →
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	168	Buy 168 →

Installation Guide

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Other WRX STI Years

2019 2018 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004

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