Parts list: № Number Qty Name Options 1 BL15725 1 Pneumatic Trailer Brake Kit Next page: ST775022 Lines / Fittings, Pneumatic 2+1 Line Trailer Brake Valve ST775020 Lines / Fittings, Pneumatic 2 Line Trailer Brake Valve ST786678 Coupler / Lines, 2 Line Air Trailer Brake System, Attachment ST854131 Attachment, Duo-Matic Quick Coupler, Air Trailer Break ST838008 Couplers, 2 Line Air Trailer Brake System, (For United Kingdom) ST465182 Couplers, 2 Line Air Trailer Brake System ST854132 Duo-Matic Quick Coupler, Air Trailer Break ST829067 Quick Coupler, Air Brake, (For United Kingdom) ST814251 Wiring Harness, Air Trailer Brake ST786556 Attachment, Pneumatic Trailer Brake, Single Line System