Standard to 400STR Conversion Kit, 6" used with RK6-475STR-RVELBOW

Standard to 400STR Conversion Kit, 6" used with RK6-475STR-RVELBOW. Kit Contains O-Ring, Relief Valve, Relief Valve Elbow, O-Ring, Relief Valve Elbow, Sensing Tube, Grooved Coupling, Body, and Spool