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2018-2021 Toyota Tundra | Bulb Size Chart (Headlights, Fogs & More)

Last updated: October 10, 2022

In this guide, we'll help you quickly and easily find the replacement bulb size(s) you need for your 2018, 2019, 2020, and 2021 Toyota Tundra (2nd Generation). From the headlights to the brake lights and everything in between.

This guide covers all sub-models and trims (Limited, SR, SR5, Platinum, 1794 Edition, and TRD Pro). During these four years, the Tundra came with either factory halogen headlights or LEDs. We make the distinction below in our charts.

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 Tundra? Get up to 300% more light with LED or HID bulbs. Learn more below the size charts!

️⭐ NOTE: This guide only applies to 2018, 2019, 2020, and 2021 Toyota Tundra 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.

2018 to 2021 Toyota Tundra - Headlight Bulb Sizes (Low & High Beam)

Position	Bulb	Type	Upgrade Avail.
Low + High Beam Headlights	H4 (9003/HB2) or LED	Halogen	Yes

Year Range 2018, 2019, 2020, and 2021.
Not sure about the difference between headlight low beams and high beams? Learn More.
This vehicle uses 1 bulb for both the low and high beams. Learn more about dual-beam bulbs.
Factory LED lights cannot be changed or upgraded. Please visit an authorized dealer for service.

2018 to 2021 Toyota Tundra - Fog Light Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Fog Light	H11	Halogen	Yes

Year Range 2018, 2019, 2020, and 2021.

2018 to 2021 Toyota Tundra - Brake & Tail Lights Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Brake Light (Rear)	3156 (3157)	Halogen	Yes
Brake Light (High-Mounted)	912 (921)	Halogen	Yes
Reverse Light	7440 (7443)	Halogen	Yes
Tail Light	3156 (3157)	Halogen	Yes

Year Range 2018, 2019, 2020, and 2021.

2018 to 2021 Toyota Tundra - Turn Signal & Marker Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Turn Signal Bulb (Front)	3156 or 7440*	Halogen	Yes
Turn Signal Bulb (Rear)	194 (168)	Halogen	Yes
Parking Light	3156 or 7440*	Halogen	Yes
Side Marker (Front)	194 (168)	Halogen	Yes
Side Marker (rear)	3156 (3157)	Halogen	Yes

Year Range 2018, 2019, 2020, and 2021.

*For model with factory LEDs only.

2018 to 2021 Toyota Tundra - All Other Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Dome Light	194 (168)	Halogen	Yes
Door Mirror Light	194 (168)	Halogen	Yes
Glox Box Light	74	Halogen	Yes
License Plate Light	194 (168)	Halogen	Yes
Map Light	194 (168)	Halogen	Yes
Trunk/Cargo Light	912 (921)	Halogen	Yes
Vanity Mirror Light	7065	Halogen	Yes

Year Range 2018, 2019, 2020, and 2021.

Toyota Tundra LED/HID Bulb Size Summary

Year Range	2018, 2019, 2020, 2021
Low + High Beam Headlights	H4 (9003/HB2)
Fog Lights	H11
Brake Light (Rear)	3156 (3157)
Brake Light (High-Mounted)	912 (921)
Back-Up (Reverse) Light	7440 (7443)
Tail Light	3156 (3157)
Turn Signal Bulb (Front)	3156 or 7440*
Turn Signal Bulb (Rear)	194 (168)
Parking Light	3156 or 7440*
Side Marker (Front)	194 (168)
Side Marker (rear)	3156 (3157)
Dome Light	194 (168)
Door Mirror Light	194 (168)
Glox Box Light	74
License Plate Light	194 (168)
Map Light	194 (168)
Trunk/Cargo Light	912 (921)
Vanity Mirror Light	7065

All trims: Limited, SR, SR5, Platinum, 1794 Edition, and TRD Pro.

*For model with factory LEDs only.

Upgrade Your Headlight Bulbs On Your 2018-2021 Toyota Tundra

Looking to improve the lights on your 2018 to 2021 Toyota Tundra 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%.

Discover our award-winning lighting products backed by our Lifetime Warranty:

Check out some of our most popular guides:

Discover some related topics:

Headlight Bulb & Assembly Replacement Video - 2018-2021 Toyota Tundra (2nd Generation)

Check out this super helpful video on how to change your headlamp bulbs and assemblies on your 2018 to 2021 Toyota Tundra. You'll need the following tools:

Flat screwdriver
10mm socket, ratchet, and extension (or a drill)
Latex gloves

Owner Manuals 2018 to 2021 Toyota Tundra

Need more information about bulb sizes, how to change the bulbs, or simply need the owner's manual? Find it below:

Toyota Tundra Owner's Manual (USA)
Toyota Tundra Owner's Manual (Canada)

FAQ

Can this guide be applied to the 2019, or 2020 Toyota Tundra?

Yes. This guide applies to all sub-models and trims (Limited, SR, SR5, Platinum, 1794 Edition, and TRD Pro) for the 2018 to 2021 Toyota Tundra.

What type of bulbs do you recommend for my 2018-2021 Toyota Tundra?

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 2018-2021 Toyota Tundra 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.

Factory LED lights cannot be changed or upgraded. Please visit an authorized dealer for service.

I purchased aftermarket assemblies for my Tundra, 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:

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.