CURT 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes Model 57187 AddOn_Below91" Product Depth (in) 13

Product Depth (in) 13

F-550 Super Duty Model 415078-401723

3500 HD Model 477078-401743

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CURT 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes Model 57187 AddOn_Below91" Product Depth (in) 13CURT 4 Way to 5 Way Flat Adapter for Boat Trailer Surge Brakes Model 57187 This electrical adapter is designed to adapt a 4 way flat vehicle socket to fit a 5 way flat trailer plug. It is specifically intended for boat trailers with surge brakes, adding in a fifth wire for the reverse lights and allowing your vehicle's 4 way flat to easily plug into your boat trailer 5 way flat. This boat trailer wiring adapter features durable molded plastic