PN#55384 SKU#876 Replacement OE 4 Way Flat Socket. Plugs into USCAR connection to add 4-way flat and retain use of existing socket. Simple plug-and-play design eliminates the need for cutting or splicing. 4-way flat output connects tail lights, brake lights and turn signals. Dust cover included to keep connector clean when not in use. Slit loom keeps wires contained and well protected.