Parts list: № Number Qty Name Options 1 AL68571 1 Hitch Coupling (Red) (2 - Line System) 2 AL217439 1 Quick Coupler (Yellow) (2 - Line System) SUB FOR AL68572 APPL 3 L215131 1 Screen USE WITH AL217439 Next page: ST919436 Accumulator / Control Valve / Air Compressor / Lines, 2 Line Air Trailer Brake System, W/O Front Wheel Brake, Attachment (673929 - 909673) ST959223 Air Trailer Brake / Control Valve / Compressor / Dual Line System, W/ Front Wheel Brake, Attachment (1/4) (909674 - 999999), (100001 - 673928) ST894813 Valves, Couplers, 2+1 Line Air Trailer Brake System, W/ Front Axle Brake (673929 - 999999), (100001 - 110438) ST974226 Mounting Parts, Air Trailer Brake Valve, W/O Pick-Up Hitch ST1024668 Valves, Couplers, 2 Line Air Trailer Brake System, W/O Front Axle Brake (110439 - 673928) ST959225 Air Trailer Brake / Control Valve / Compressor / Dual Line System, W/ Front Wheel Brake, Attachment (2/4) (909674 - 999999), (100001 - 673928) ST881625 Valves, Couplers, 2 Line Air Trailer Brake System, W/ Front Axle Brake (673929 - 999999), (100001 - 110438) ST889219 Compressor Lines / Holder / Fittings (673929 - 999999), (100001 - 127122) ST854132 Duo-Matic Quick Coupler, Air Trailer Break ST991493 Wiring Harness, Air Trailer Brake (964999 - 999999), (100001 - 673928)