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The Diode Dynamics 921 XPR red LED bulb is a direct replacement for the factory 921 third brake light bulb, compatible with Scion xB third brake applications. Offering instant on/off response and intense red illumination that meets SAE/DOT color expectations, it provides a modern LED upgrade with plug-and-play installation. Built with constant-current circuitry for reliable, long-lasting operation.
Diode Dynamics 921 XPR LED Bulb - Red (Single)
