Small Socket. Huge Upgrade: Morimoto XB LED Bulbs – 4257 (Resistor-Free)
Still running factory incandescent bulbs in your turn signals or brake lights? It’s time to ditch the dim and step up to the Morimoto XB LED Bulbs – 4257 Resistor-Free. Built for performance, safety, and seamless integration, these next-generation bulbs pack a serious punch in a compact size. Whether you’re swapping out turn signals, reverse lights, or brake lights, these bulbs are engineered to deliver modern brightness without the hassle.
With built-in error-free functionality, active cooling, and compatibility with both CK and non-CK circuits, the 4257 XB bulbs are a direct fit upgrade that will instantly elevate your vehicle’s lighting game.
Key Features & Benefits
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Extreme Output: Delivers a powerful 1,680 raw lumens per bulb with 30W of clean, efficient LED lighting.
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Truly Resistor-Free: No extra resistors needed—these bulbs prevent hyper-flashing and warning lights in most applications.
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Smart Circuit Design: Compatible with both CK and non-CK circuits, making install foolproof across vehicle platforms.
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Thermal Protection: Built-in active cooling fan prevents overheating and ensures long-term reliability even during extended use.
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Plug-and-Play Simplicity: Direct replacement for 4257 bulbs—no cutting, no coding, no stress.
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Multi-Purpose Use: Designed for use in turn signals, brake lights, tail lights, parking lights, and reverse lights.
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No Flicker or Fade: Maintains full brightness and performance for over 30 minutes continuously—outshines the competition.
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Built for the Long Haul: Equipped with 52x 3030SMD LED chips, delivering robust performance rated for 2,000 hours of life.
Bright, Reliable, and Effortless
Most aftermarket “resistor-free” bulbs start out bright and cool—until they fade, flicker, or cause errors after just a few minutes of use. The 4257 XB LED Bulbs from Morimoto solve all of that with next-level engineering. These bulbs maintain consistent output and temperature thanks to a dedicated internal cooling system, while offering the same or better performance than higher-draw alternatives—without triggering warnings or needing external modules.
Whether you’re looking to modernize your vehicle’s exterior lighting or eliminate the hassle of outdated tech, this is the kind of drop-in upgrade that pays off every time you hit the road.
Vehicle Compatibility
The 4257 Morimoto XB LED Bulbs are designed for vehicles using:
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Socket Type: 4257
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Cross-Circuit Support: CK and Non-CK compatible
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Application Fitment: Turn Signals, Brake Lights, Tail Lights, Parking Lights, Reverse Lights
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Note: Not compatible with vehicles using PWM-driven DRLs.
Technical Specifications
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Voltage Range: 10–18V DC
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Current Draw: 2.3A @ 13V DC
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Power Consumption: 30W
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Luminosity: 1,680 lumens (raw, per bulb)
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LED Configuration: 52x 3030SMD Chips
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Cooling System: Integrated Active Cooling Fan
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Lifespan: 2,000 hours
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Installation Type: Plug-and-Play
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Error-Free Operation: Resistor-Free / Hyperflash-Free (in most cases)
What’s Included
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2x Morimoto XB LED Bulbs – 4257 (Resistor-Free)
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Warranty: 2 Years
No Resistors. No Guesswork. Just Brilliant Lighting.
Bright, efficient, and truly plug-and-play, the 4257 XB LED Bulbs are the modern solution for a common problem. Whether you’re upgrading safety, style, or both, Morimoto delivers next-level LED tech that’s ready for the road and built to last.
Install once. Shine always. Choose Morimoto.
