Part Number: 07-13730 (78862 lycoming ring piston comp ) Part Number: 0713730-1 (Rib) Part Number: 07-13731 (78864 lycoming ring piston oil 4) Part Number: 0713732-1 (Shield ay) Part Number: 0713732-2 (Shield ay) Part Number: 0713732-3 (Rail) Part Number: 0713732-5 (Shield ay) Part Number: 0713732-6 (Shield ay) Part Number: 0713732-7 (Shield) Part Number: 0713732-8 (Shield) Part Number: 0713734-1 (Bracket) Part Number: 0713735-1 (Rod) Part Number: 0713736-1 (Stiffener) Part Number: 0713736-2 (Stiffener)