What is the low beam headlight bulb size for a 2004 Ford Focus?

The 2004 Ford Focus uses a H4 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2004 Ford Focus?

The high beam bulb size for the 2004 Ford Focus is N/A.

Why are my 2004 Ford Focus headlights dim?

Dim headlights on a 2004 Ford Focus can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H4 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2004 Ford Focus fog light?

The 2004 Ford Focus uses a 899 bulb for the fog light position.

Is the 2004 Ford Focus single or dual beam?

The 2004 Ford Focus uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2004 Ford Focus?

Yes, the 2004 Ford Focus comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H4 LED conversion kit for the low beams.

Does the 2004 Ford Focus have fog lights?

Yes, the 2004 Ford Focus takes a 899 bulb for the fog light position.

Did the 2004 Ford Focus change headlight bulb sizes from the previous year?

Yes — the 2004 Ford Focus uses different bulb sizes than the 2003 model. The 2004 generation introduced this bulb configuration.

Is the 2004 Ford Focus the first or last year to use H4 bulbs?

The 2004 Ford Focus is the only year in the 2004 generation to use the H4 bulb for the low beam headlight.

How do I change the headlight on a 2004 Ford Focus?

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 H4 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 2004 Ford Focus?

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 H4 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 2004 Ford Focus headlights?

A pair of halogen H4 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 2004 Ford Focus?

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 H4 position are available as direct plug-and-play replacements.

The 2004 Ford Focus has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2004 Ford Focus

What Size Bulbs Does a 2004 Ford Focus 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 2004 Ford Focus Have?

Owners of the 2004 Ford Focus will find a total of 12 lighting elements throughout the vehicle's exterior. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate H4 low beam and high beam bulbs for precise light distribution. This model belongs to the early years of the Focus's 2000-2018 production span.

Can You Put LED Bulbs in a 2004 Ford Focus?

For a Ford built for the road and trail, LED upgrades provide the high-contrast lighting needed for better obstacle detection. We recommend starting your upgrade with the H4 low beams, as they see the most use. Adding a matching LED kit later will complete the look and ensure consistent lighting performance. Don't forget the 899 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2004 Ford Focus Bulb Size Chart

Position	Bulb Size	Shop
Daytime Running	3157	Buy 3157 →
Turn Signal Front	3157	Buy 3157 →
Low Beam	H4	Buy H4 →
Side Marker	194	Buy 194 →
Fog Light	899	Buy 899 →
Brake Light	3157	Buy 3157 →
Parking Light	3157	Buy 3157 →
Turn Signal Rear	3157	Buy 3157 →
Tail Light	3157	Buy 3157 →
Reverse Light	921	Buy 921 →
Trunk Light	W5W	Buy W5W →
Map Light	3886X	Buy 3886X →

How do the 2004 Ford Focus's bulbs compare to other years?

The 2004 Ford Focus changed bulb sizes from 2003. The previous model year used a different configuration.

The 2005 model switched to a different bulb configuration.

This bulb configuration covers the 2004 model years. ← 2003 2005 →

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Other Focus Years

2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2003 2002 2001 2000

Other Vehicles That Use H4 Bulbs

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H4 Comparisons

9003 vs H4 H4 vs H7 H4 vs HB2