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The 4257 HP24 Switchback LED bulb from Diode Dynamics adds dual-color functionality to front turn signals: cool white for running lights and amber for turn indication. Built as a true replacement for 4257-size bulbs with a custom-molded base, it uses high-power Samsung LEDs arranged for balanced output and installs plug-and-play in compatible Ford applications with clear reflector lenses.
Diode Dynamics 4257 HP24 LED Bulb - Cool - White Switchback (Single)
