More information is available in the Teleflex Marine Technical Manual. Teleflex Marine parts are installed as original equipment by many of the top boat builders. Teleflex manufactures the largest line of replacement boat parts including mechanical rack steering & rotary steering parts, steering cables, control cables, helms, guages. Teleflex also builds boat hydraulic steering systems & replacement parts for the controls, hydraulic cylinders & helms in the BayStar & SeaStar product lines.