What is the low beam headlight bulb size for a 2003 Acura RSX?

The 2003 Acura RSX uses a H1 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 2003 Acura RSX?

The high beam bulb size for the 2003 Acura RSX is 9005 LED.

Why are my 2003 Acura RSX headlights dim?

Dim headlights on a 2003 Acura RSX can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H1 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2003 Acura RSX fog light?

The 2003 Acura RSX uses a LED Fog Lights bulb for the fog light position.

Is the 2003 Acura RSX single or dual beam?

The 2003 Acura RSX uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2003 Acura RSX?

Yes, the 2003 Acura RSX comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H1 LED LED conversion kit for the low beams.

Does the 2003 Acura RSX have fog lights?

Yes, the 2003 Acura RSX takes a LED Fog Lights bulb for the fog light position.

Did the 2003 Acura RSX change headlight bulb sizes from the previous year?

No — the 2003 Acura RSX uses the same bulb sizes as the 2002 model. This configuration has been consistent across the 2002–2003 generation.

Is the 2003 Acura RSX the first or last year to use H1 LED bulbs?

The 2003 Acura RSX is the last year in the 2002–2003 generation to use the H1 LED bulb for the low beam headlight.

How do I change the headlight on a 2003 Acura RSX?

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 H1 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 2003 Acura RSX?

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 H1 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 2003 Acura RSX headlights?

A pair of halogen H1 LED 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 2003 Acura RSX?

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 H1 LED position are available as direct plug-and-play replacements.

The 2003 Acura RSX is the last model year to use this bulb configuration (2002–2003).

Fitment Guaranteed for 2003 Acura RSX

What Size Bulbs Does a 2003 Acura RSX Use?

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

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

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

What Lighting System Does the 2003 Acura RSX Have?

The 2003 Acura RSX utilizes a refined lighting configuration featuring 14 distinct bulb positions. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate H1 LED low beam and 9005 LED high beam bulbs for precise light distribution. This model belongs to the early years of the RSX's 2002-2006 production span.

Can You Put LED Bulbs in a 2003 Acura RSX?

Upgrading to LED is one of the most effective ways to modernize your Acura's appearance and safety profile. We recommend starting your upgrade with the H1 LED 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 LED Fog Lights fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2003 Acura RSX Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H1 LED	Buy H1 LED →
High Beam	9005 LED	Buy 9005 LED →
Fog Light	LED Fog Lights	Buy LED Fog Lights →
Brake Light	7440	Buy 7440 →
Dome Light	DE3175	Buy DE3175 →
Turn Signal Front	7440A	Buy 7440A →
Side Marker	168	Buy 168 →
License Plate	168	Buy 168 →
Map Light	DE3175	Buy DE3175 →
Parking Light	168	Buy 168 →
Turn Signal Rear	7443	Buy 7443 →
Reverse Light	921	Buy 921 →
Trunk Light	168	Buy 168 →
Tail Light	7443CK	Buy 7443CK →

How do the 2003 Acura RSX's bulbs compare to other years?

The 2003 Acura RSX uses the same bulbs as the 2002 model.

The 2004 model switched to a different bulb configuration.

This bulb configuration covers the 2002–2003 model years. ← 2002 2004 →

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Other RSX Years

2006 2005 2004 2002

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