What is the low beam headlight bulb size for a 2005 Infiniti Q45?

The 2005 Infiniti Q45 uses a N/A bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2005 Infiniti Q45?

The high beam bulb size for the 2005 Infiniti Q45 is 9005.

Why are my 2005 Infiniti Q45 headlights dim?

Dim headlights on a 2005 Infiniti Q45 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a N/A LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2005 Infiniti Q45 fog light?

The 2005 Infiniti Q45 uses a H8 bulb for the fog light position.

Is the 2005 Infiniti Q45 single or dual beam?

The 2005 Infiniti Q45 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2005 Infiniti Q45?

Yes, the 2005 Infiniti Q45 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a N/A LED conversion kit for the low beams.

Does the 2005 Infiniti Q45 have fog lights?

Yes, the 2005 Infiniti Q45 takes a H8 bulb for the fog light position.

Did the 2005 Infiniti Q45 change headlight bulb sizes from the previous year?

Yes — the 2005 Infiniti Q45 uses different bulb sizes than the 2004 model. The 2005 generation introduced this bulb configuration.

Is the 2005 Infiniti Q45 the first or last year to use N/A bulbs?

The 2005 Infiniti Q45 is the only year in the 2005 generation to use the N/A bulb for the low beam headlight.

How do I change the headlight on a 2005 Infiniti Q45?

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 N/A 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 2005 Infiniti Q45?

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 N/A 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 2005 Infiniti Q45 headlights?

A pair of halogen N/A 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 2005 Infiniti Q45?

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 N/A position are available as direct plug-and-play replacements.

The 2005 Infiniti Q45 has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2005 Infiniti Q45

What Size Bulbs Does a 2005 Infiniti Q45 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 2005 Infiniti Q45 Have?

Owners of the 2005 Infiniti Q45 will find a total of 9 lighting elements throughout the vehicle's exterior. It features a comprehensive lighting system powered by a dual-bulb halogen configuration using separate low beam and 9005 high beam bulbs for precise light distribution. This model belongs to the late years of the Q45's 1990-2006 production span.

Can You Put LED Bulbs in a 2005 Infiniti Q45?

Upgrading to LED is one of the most effective ways to modernize your Infiniti's appearance and safety profile. We recommend starting your upgrade with the low beams, as they see the most use. Adding a matching 9005 LED kit later will complete the look and ensure consistent lighting performance. Don't forget the H8 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2005 Infiniti Q45 Bulb Size Chart

Position	Bulb Size	Shop
Fog Light	H8	Buy H8 →
High Beam	9005	Buy 9005 →
Side Marker	W5W	Buy W5W →
Turn Signal Front	7440NA	Buy 7440NA →
Turn Signal Rear	7440NA	Buy 7440NA →
License Plate	168	Buy 168 →
Reverse Light	921	Buy 921 →
Parking Light	W5W	Buy W5W →
Brake Light	921	Buy 921 →

How do the 2005 Infiniti Q45's bulbs compare to other years?

The 2005 Infiniti Q45 changed bulb sizes from 2004. The previous model year used a different configuration.

The 2006 model switched to a different bulb configuration.

This bulb configuration covers the 2005 model years. ← 2004 2006 →

Finding the best installation guide...

Other Q45 Years

2006 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990

More from Infiniti

EX35 EX37 FX35 FX37 FX45 FX50 G20 G25