3157 3357 4157 Brake Turn Signal Light Socket Harness Wires For LED or Stock (Pack of 2PCS) Compatible Bulbs: 3157: 3057 3155 3357 3457 3757 4057 4157;3156: 3056 3456 4156. High heat resistant polymer material. Pre-Wired socket for Easy Wiring Installation.High conductivity copper wiring for better safety. TTX Lighting is a US Local Seller that will ship your product within One Day from California.