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Toyota Tundra (14-21) LED Third Brake Light

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Brand: Morimoto




PART #: 1 x X3B15

*Guaranteed Fitment
Easy Return


Introducing the Morimoto X3B LED Third Brake Light Upgrade for 14-21 Toyota Tundra trucks. Say goodbye to ordinary third brake lights with this exceptional upgrade. The X3B combines style, performance, and utility, featuring modern 3D red brake light optics, clear bed illumination, and a sleek piano-black polycarbonate housing. Functionality meets aesthetics with four jewel-like brake light optics powered by 3W LEDs for maximum visibility day and night. An optional F1-style rapid flash module (SKU X3B01) is also available for added flair. Not just about looks, the X3B offers purposeful bed lighting with rail-style optics, eliminating dead spots. Installation is a breeze, as it utilizes original mounting points and plugs into the stock wire harness without any modifications. Plus, it complies with DOT and SAE regulations, ensuring both style and safety. Elevate your Tundra's appearance and functionality with the Morimoto X3B LED Third Brake Light Upgrade, backed by an industry-leading five-year warranty.


  • Enhanced Style: Modern 3D brake light optics and clear bed illumination for a sleek look.
  • High-Intensity: Quad brake lights with 3W LEDs for maximum visibility day and night.
  • Rapid Flash Option: Add flair with the optional F1-style rapid flash module (SKU X3B01).
  • Efficient Bed Lighting: Purpose-designed lights ensure even illumination.
  • Easy Installation: Mounts seamlessly, no modifications needed.


  • Third Brake Light: 1x Morimoto X3B LED Module (14-21 Toyota Tundra)

  • Gasket: 1x Foam Gasket

  • Mounting Hardware: 2x Mounting Studs

  • Wiring: Plug and Play Adapter Harness

  • Optional Rapid Flash Module: Plug and Play Flasher (X3B01)


This Morimoto product includes a 5 Year limited warranty, serviced and supported by the Morimoto team in Atlanta, GA. This warranty does not cover modifications, alterations, or misuse. For additional information, Click Here.


  • Input: Toyota Multi-Pin OEM

  • Housing: Piano Black Polycarbonate

  • Lens: UV-Resistant Clear Polycarbonate

  • Bed Light: White (3W)


  • Toyota Tundra: 2014-2021

  • Replaces Toyota Part #: 81570-0C050

  • NOTE: These housings have been designed for, and tested on, US-Spec vehicles. Other countries' compatibility may vary and is not guaranteed nor always known.


DOT, SAE Compliant


Just Right: Yes, we know. We know. You have been looking for a third brake light upgrade for a while now, only to retreat every time. Discouraged when the search returns no more than the same old variety of el-cheapo options out there. The X3B from Morimoto is different though. It's the one you've been waiting for. It's a no-compromise brake and bed light that offers the perfect pairing of style, performance, and utility, and its now available for your 14-21 Toyota Tundra truck.

Style: Modern headlights have come a long way. Modern tail lights have come a long way... yet Toyota is still specifying the same basic 20-year-old third brake lights on even their most modern trucks. Why? The X3B is the perfect grand finale for detail-oriented enthusiasts who just say no to stock. The pronounced 3D red brake light optics are as modern as it gets, yet tasteful. Complimented by the clear optics that illuminate the bed, and all wrapped up inside a piano-black polycarbonate housing. Here, form meets function.

Brake Lights: Here, function meets form, because the quad brake light optics are just as effective as they are attractive. Four jewel-like optics molded from optical-grade red polycarbonate paired with powerful 3W LEDs create a high-intensity brake light setup that's easily visible both day and night. An F1-style rapid flash module is also available, and easy to install (SKU X3B01).

Bed Lights: Are usually an afterthought, but not with the Morimoto X3B LED brake light modules. Optically engineered rail-style optics have been purposefully designed to effectively illuminate your bed without dead spots. While the X3B looks cool, its also a major upgrade for enthusiasts who value utility, and actually use their trucks too.

Easy Install: The X3B re-uses all of the original mounting points, fits like the factory brake light, and will plug into the stock wire harness. There are no modifications required for the installation.

Style and Safety: All Morimoto assemblies are designed to comply with all DOT, SAE regulations for rear-facing lamps. We pride ourselves on offering stylish, high-performance and safe products for serious enthusiasts, which is why all new Morimoto products are verified by trusted third party labs for compliance and are backed with an industry-leading five year warranty.

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