These fitting kits enable installation of a 2nd station helm or an autopilot pump into an existing Dometic outboard steering system. Some additional parts which are supplied with the helm pump will be re-used. HF5501 Includes: 2ea HF5531 Tee -3/8"Tube(M), 1/4" NPT(M), 3/8"Tube Ctr(M) 4ea HF5528 Helm Fitting - 1/4" NPT(M), 3/8" Tube(M) 1ea HA5432 No-Vent Fill Plug 25' HT5092 3/8" Nylon Tube