SeaStar NFB 4.2 Replacement Steering Helm by Dometic The SH4910P NFB 4.2 steering helm is the replacement helm for the SeaStar SS147 Steering System.Direct replacement for Teleflex Marine original factory steering helms. SeaStar Solutions replaced Teleflex Marine and has been acquired by Dometic Group. The helm is a drop-in replacement for current generation Safe-T helms with no dash modifications required.; Comfortable 4.2 turns from lock-to-lock.; Standard 3/4" round tapered steering shaft.; Use with Teleflex SSC62 Series steering cables.; Meets A.B.Y.C. standards and N.M.M.A. certification requirements.;