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3157: GTR i-LED Ultra Turn Signal Bulbs

10 Reviews

Brand: GTR Lighting




PART #: 1 x LED963

Easy Return


Experience automotive lighting like never before with GTR Ultra i-LED Bulbs. Defying convention, these bulbs shatter the limitations of traditional lighting systems. Designed to dominate the road, they outshine competitors with precision-engineered brilliance. The advanced optical system projects intense light forward while reflecting over 50% backward, ensuring remarkable visibility from all angles. With a hassle-free installation that doesn't require additional resistors, upgrading your lighting has never been easier. Choose from an array of captivating colors – from classic White to dynamic Red, Amber, or the eye-catching Switchback. Designed for universal fitment, these bulbs seamlessly integrate into any housing, enhancing your vehicle's aesthetic and safety. Illuminate your drive with the future of lighting – choose GTR Ultra i-LED Bulbs today.


  • Elevated Driving: GTR Ultra i-LED Bulbs redefine your driving experience.
  • Advanced Optics: Project intense light forward, reflect over 50% backward for superior visibility.
  • Hassle-Free Brilliance: Resistor-free design ensures easy installation without sacrificing power.
  • Vibrant Colors: Choose from White, Red, Amber, or dynamic Switchback.
  • Universal Fit: Seamlessly integrate into any headlight or taillight housing for enhanced style.


  • LED Bulbs: 2x (One Pair) GTR Ultra Indicator-LED Bulbs

  • Wiring: 2x 3156/3157 Plug and Play Inputs

  • Hardware: 4x Gaskets, 1x Torx Tool

  • Optional Hyperflash Adapters: 2x (One Pair)


This GTR Lighting product includes a Lifetime limited warranty, serviced and supported by the GTR LIghting team in Atlanta, GA. This warranty does not cover modifications, alterations, or misuse. For additional information, contact us.


  • Input Voltage: 9-24V DC

  • Current: 260mA-2.1A (Red, White, Amber Models), 1.3A (Switchback Model) @ 12V DC

  • Light Source: 9-12x Proprietary SMD


  • CK Style Sockets: Compatible with optional CK Input Sockets

  • Cross Compatibility: 3156, 3157, 3057, 3155, 3156, 3357, 3457, 4057, 4157

  • FITMENT: Signal, Marker, Brake, Tail, Reverse Lights


New Benchmark: When it comes to high performance LED Bulbs; the numbers game is simply an excuse for a lack of engineering, and GTR Lighting isn't here to play that game. The i-LED bulbs from GTR Lighting are here to win, and when you see them next to the aging competition, you won't worry much about the numbers.

Ultra Optics:The optical system on the i-LED bulbs is highly effective at maximizing output. It projects a considerable amount output forward to provide a vivid taste of intensity up close, but more importantly it reflects more than half of the output backwards onto the surrounding reflector of your head/tail light --which is what drives intensity when viewed from a distance.

Resistor Free: Make no mistake, these are still extremely powerful bulbs. The i-LED consumes nearly the same amount of power as the original incandescent/halogen bulb, which conveniently makes them resistor-free in many applications too. We do however recommend the optional plug-n-play modules for the most reliable hyperflash-free fitment into any position that acts as a blinker, regardless of application.

Applications: The GTR Ultra i-LED is available in a pure White, Red, PC Amber, and White/Amber Switchback. Their universal collar fits any headlight or taillight housing, making them the perfect solution for those who are unwilling to compromise on intensity from their turn, brake, tail and daytime running lights.

i-Driver: The intelligent LED Drivers have been tuned to maximize intensity without compromising in the reliability department. The high-output mode is over-driven for < 2 sec to maximize initial intensity, before ramping down to a more conservative drive rate that the system can handle long term.

Style, Even During the Daytime: Don't forget about the fact that everybody still see whats inside of your headlights during the daytime, even when they're un-lit. The GTR i-LED looks superior compared to everything else out there thanks to the fact that you cannot visibly see the LED chips directly. All you see is the business end of the bulb, with its mirror perfect, crystal clear optics protruding out of the anodized aluminum base. Perfection.

Ratings & Reviews

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Bright and Looks way better

by -

Bought for my 05 Mustang GT. Car did not come with fog lights in the bumper and now with the marker lights clear instead of amber, it gives the car the look I was looking for.



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GTR L: Muy buen producto, alta calidad en el ensamble y materiales, muy completo y realmente compatible, solamente recomendable con portalamparas para cada señalizacion, no unificados.

HR: servicio perfecto, preparacion rapida (sujeto a USPS) y bien predispuestos.

Saludos desde Argentina!!

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