Last updated: October 11, 2022
In this guide, we'll help you quickly and easily find the replacement bulb size(s) you need for your 2003, 2004, and 2005 Toyota 4Runner (4th Generation). From the headlights to the brake lights and everything in between.
This guide covers all sub-models and trims (Limited, SR5, and SR5 Sport) during these 3 years.
We organized all the bulbs into 5 lighting categories with easy-to-read charts. Select any of the categories below to jump right to the bulb size chart you're looking for:
- Headlight Bulb Sizes
- Fog Light Bulb Sizes
- Brake & Tail Light Sizes
- Turn Signal & Marker Bulb Sizes
- All Other Bulb Sizes
- Bulb Size Summary
- Upgrading Your Bulbs (Popular!)
- Installation Video
- Owner Manuals
- FAQ's
💡 TIP: Did you know that you can upgrade your headlight and fog light bulbs on your Toyota 4Runner? Get up to 300% more light with LED or HID bulbs. Learn more below the size charts!️⭐ NOTE: This guide only applies to 2003, 2004, and 2005 Toyota 4Runner with the original factory (OEM) assemblies. If you have aftermarket headlights, fog lights, brake lights, etc. you will need different bulb sizes as per the manufacturer's specifications.🎯 ACCURACY: If you notice any inaccuracies or missing information, please let us know so we can update the guide. Providing accurate and complete information is important to us and our readers. 🚧 IMPORTANT: Automotive light bulbs are vehicle-specific! Follow this guide, review your owner's manual or contact your dealership to make sure you're buying the right bulbs to avoid fitment issues.
2003 to 2005 Toyota 4Runner - Headlight Bulb Sizes (Low & High Beam)
| Position | Bulb | Type | Upgrade Avail. |
| Low Beam Headlights (dims) | 9006 (HB4) | Halogen | Yes |
| High Beam Headlights (brights) | 9005 (HB3) | Halogen | Yes |
- Year Range 2003, 2004, and 2005.
- Not sure about the difference between headlight low beams and high beams? Learn More.
2003 to 2005 Toyota 4Runner - Fog Light Bulb Sizes
| Position | Bulb | Type | Upgrade Avail. |
| Fog Light | 9006 (HB4) | Halogen | Yes |
- Year Range 2003, 2004, and 2005.
2003 to 2005 Toyota 4Runner - Brake & Tail Lights Bulb Sizes
| Position | Bulb | Type | Upgrade Avail. |
| Brake Light (Rear) | 7440 (7443) | Halogen | Yes |
| Brake Light (High-Mounted) | 912 (921) | Halogen | Yes |
| Reverse Light | 912 (921) | Halogen | Yes |
| Tail Light | 7440 (7443) | Halogen | Yes |
- Year Range 2003, 2004, and 2005.
2003 to 2005 Toyota 4Runner - Turn Signal & Marker Bulb Sizes
| Position | Bulb | Type | Upgrade Avail. |
| Turn Signal Bulb (Front) | 7440 or 3156 | Halogen | Yes |
| Turn Signal Bulb (Rear) | 7440 (7443) | Halogen | Yes |
| Parking Light | 7440 (7443) | Halogen | Yes |
| Side Marker (Front) | 194 (168) | Halogen | Yes |
| Side Marker (rear) | 7440 (7443) | Halogen | Yes |
- Year Range 2003, 2004, and 2005.
2003 to 2005 Toyota 4Runner - All Other Bulb Sizes
| Position | Bulb | Type | Upgrade Avail. |
| Dome Light | DE3175 | Halogen | Yes |
| Glove Box Light | 37 | Halogen | Yes |
| Interior Door Light | 194 (168) | Halogen | Yes |
| License Plate Light | 194 (168) | Halogen | Yes |
| Map Light | 194 (168) | Halogen | Yes |
| Stepwell Light | 194 (168) | Halogen | Yes |
| Trunk/Cargo Light | DE3175 | Halogen | Yes |
| Turn Signal Indicator Light | 37 | Halogen | Yes |
| Vanity Mirror Light | DE3021 | Halogen | Yes |
- Year Range 2003, 2004, and 2005.
Toyota 4Runner LED/HID Bulb Size Summary
| Year Range | 2003, 2004, 2005 |
| Low Beam Headlights | 9006 (HB4) |
| High Beam Headlights | 9005 (HB3) |
| Fog Lights | 9006 (HB4) |
| Brake Light (Rear) | 7440 (7443) |
| Brake Light (High-Mounted) | 912 (921) |
| Reverse Light | 912 (921) |
| Tail Light | 7440 (7443) |
| Turn Signal Bulb (Front) | 7440 or 3156 |
| Turn Signal Bulb (Rear) | 7440 (7443) |
| Parking Light | 7440 (7443) |
| Side Marker (Front) | 194 (168) |
| Side Marker (Rear) | 7440 (7443) |
| Dome Light | DE3175 |
| Glove Box Light | 37 |
| Interior Door Light | 194 (168) |
| License Plate Light | 194 (168) |
| Map Light | 194 (168) |
| Stepwell Light | 194 (168) |
| Trunk/Cargo Light | DE3175 |
| Turn Signal Indicator Light | 37 |
| Vanity Mirror Light | DE3021 |
- All trims: Limited, SR5, and SR5 Sport.
Upgrade Your Headlight Bulbs On Your 2003-2005 Toyota 4Runner
Looking to improve the lights on your 2003 to 2005 Toyota 4Runner with better, brighter, and more durable lighting? At XenonPro.com, we developed LED and HID bulbs that fit right into your vehicle. With the same design and plugs, our bulbs are incredibly easy to install and will improve your light output by up to 300%.
- Shop 2003 Toyota 4Runner Bulb Upgrades
- Shop 2004 Toyota 4Runner Bulb Upgrades
- Shop 2005 Toyota 4Runner Bulb Upgrades
Discover our award-winning lighting products backed by our Lifetime Warranty:
Check out some of our most popular guides:
- LED vs HID - Which Are Better?
- Headlight Replacement Cost - Complete Guide
- Do LED & Xenon HID Headlights Fade Over Time?
- How Long Should Halogen, LED & Xenon HID Headlights Last?
Discover some related topics:
- Toyota 4Runner (1999-2002) | Bulb Size Chart
- Toyota 4Runner (2006-2009) | Bulb Size Chart
- Toyota 4Runner (2010-2013) | Bulb Size Chart
- Toyota 4Runner (2014-2021) | Bulb Size Chart
- Toyota 4Runner (2022-2023) | Bulb Size Chart
Headlight Bulb Replacement Video - 2003-2005 Toyota 4Runner (4th Generation)
Check out this super helpful video on how to change your headlamp bulbs on your 2003 to 2005 Toyota 4Runner. You won't need any special tools, only a pair of latex gloves.
Headlamp Assembly Replacement Video - 2003-2005 Toyota 4Runner (4th Generation)
Check out this video on how to change your headlamp bulbs on your 2003 to 2005 Toyota 4Runner. You'll need the following tools:
- Flat screwdriver
- Phillips screwdriver
- 10mm socket (or a drill)
Owner Manuals 2003 to 2005 Toyota 4Runner
Need more information about bulb sizes, how to change the bulbs, or simply need the owner's manual? Find it below:
- Toyota 4Runner Owner's Manual (USA)
- Toyota 4Runner Owner's Manual (Canada)
FAQ
Can this guide be applied to a 2004 Toyota 4Runner?
Yes. This guide applies to all sub-models and trims (Limited, SR5, and SR5 Sport) for the 2014 to 2021 Toyota 4Runner.
What type of bulbs do you recommend for my 2003-2005 Toyota 4Runner?
If you do a lot of nighttime driving or have difficulty seeing at night, we recommend upgrading from halogen to either LED or HID bulbs. They will produce more light and last longer than replacement bulbs.Discover how you can put LED or HID bulbs in your factory headlights.
Can I change the bulbs on my 2003-2005 Toyota 4Runner myself?
Yes, so long as they are halogens. Changing halogen bulbs is quite easy for the most part. We strongly advise finding How-To videos online for the specific bulb(s) you wish to change and consult the Owner's Manual for additional help.
I purchased aftermarket assemblies for my 4Runner, can I use this guide?
No. Aftermarket assemblies typically use different bulb sizes. Consult with the assembly manufacturer for the right bulb size(s).
Sources:
- XenonPro.com Research
- Toyota Owner's Manual (USA)
- Toyota Owner's Manual (Canada)
- Sylvania Automotive
- Philips Automotive Bulb Finder (USA)
Disclaimer: The information contained on this page is provided free of charge to our visitors. It was prepared to the best of our abilities and with all the information available to us at the time of writing. We reserve the right to change, remove or update any information contained on this page at any time and without notice to improve its accuracy. The most reliable method to determine the bulb size is by pulling your actual bulb(s) and reading the part number indicated directly on the bulb. The information compiled on this page comes with no guarantees or warranties.