Part Number: 105-14104 (Main rotor head)Part Number: 105-141081 (Main rotor head)Part Number: 105-141091 (Main rotor head)Part Number: 117-141081 (Main rotor head)Part Number: 204-012-101-029FM (Main rotor head)Part Number: 204-012-101-153FM (Main rotor head)Part Number: 206-011-100-012 (Main rotor head)Part Number: 206-011-100-021 (Main rotor head)Part Number: 330A31003004M (Main rotor head)Part Number: 332A31000105S (Main rotor head)Part Number: 332A31000106N (Main rotor head)Part Number: 365A31-0012-02 (Main rotor head)Part Number: 8-1939-000C2 (Main rotor head)Part Number: S6110-23000-005 (Main rotor head)Part Number: S6112-20000-037 (Main rotor head)Part Number: S6112-20000-054 (Main rotor head)