58180-ZX2-T21 Prop (15-1/4X19) - Overview. The 58180-ZX2-T21 Prop (15-1/4X19) is a genuine Honda marine engine component designed to provide superior propulsion in Honda marine engine systems. This three-blade stainless steel propeller features a diameter of 15-1/4 inches and a pitch of 19 inches, delivering efficient thrust and excellent handling characteristics. It plays a critical role in converting engine power into forward motion, thus ensuring smooth and reliable operation of your boat. En