BAY15D 50LED 10-30V

Upgrade your marine navigation lighting system with our premium 1157 LED bulb-the ultimate replacement for traditional T25 BAY15D halogen navigation bulbs. Engineered specifically for marine environments. This BAY15D LED bulb delivers unbeatable performance, durability, and visibility for motor vessels of all sizes.

At the core of this P21/5W LED bulb lies a high-density array of 5mm LED chips, available in 30, 50, or 80 LED configurations, which takes center stage with full 360° omnidirectional illumination. Unlike halogen bulbs that emit light in narrow beams, every 1157 LED bulb is designed to cast uniform light across all angles, eliminating dark spots and ensuring your vessel's navigation lights are visible from any direction-critical for safe marine operations day or night.

Built for the harsh marine environment, the bulb features a full aluminum housing that acts as a passive heat sink, dissipating heat far more efficiently than plastic alternatives. This superior thermal management prevents overheating, a common issue with halogen bulbs, and directly extends the lifespan of the BAY15D LED bulb. Paired with an integrated intelligent constant current circuit, the 1157 LED bulb maintains a stable, flicker-free light output even with voltage fluctuations between 10V and 30V. The circuit also protects against voltage spikes and reverse polarity, ensuring reliable performance in rough marine conditions.

In terms of energy efficiency, the P21/5W LED bulb outshines traditional halogen options by a significant margin. Drawing just 3 watts of power, it delivers brightness equivalent to a 25–30W halogen bulb-slashing energy consumption while maintaining or exceeding the luminous output required for COLREGs compliance. For boaters, this means less strain on onboard batteries and fewer bulb replacements, making the BAY15D LED bulb a cost-effective long-term investment.

Compliant with international marine safety standards, the 1157 LED bulb is offered in red, green, and white color options-matching the COLREGs requirements for motor vessels: red for the port (left) side, green for the starboard (right) side, and white for masthead and stern lights. Whether you're outfitting a small fishing boat or a large yacht, this P21/5W LED bulb ensures your navigation lights meet global safety regulations while standing out with crisp, vivid light.

Beyond the standard BAY15D base (the industry standard for 1157 bulbs), we offer a range of socket options, including BA15D, E27, and P28S, making this LED bulb compatible with nearly all marine navigation light fixtures. The direct plug-and-play design means replacing your old halogen T25 BAY15D bulb takes seconds-no wiring modifications or professional installation required.

Durability is baked into every component: the aluminum housing resists corrosion from saltwater and humidity, while the epoxy-sealed LED chips are shockproof and vibration-resistant, able to withstand the rigors of open water travel. Where halogen bulbs typically last only a few hundred hours, our BAY15D LED bulb boasts a lifespan of over 50,000 hours-minimizing maintenance and downtime for boaters.

Whether you're upgrading to a 30 LED compact model for a small vessel, the 50 LED 360° illumination version for all-around visibility, or the 80 LED high-brightness option for larger boats, our 1157 LED bulb sets the gold standard for marine navigation lighting. Experience the difference of energy-efficient, long-lasting, and COLREGs-compliant LED technology-replace your halogen bulbs today and sail with confidence.

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