HONDA GX series clearance adjustment nut 14451-Z4M-000 Item description:
Manufacturer: HONDA
Catalog number: 914451-ZE1-013 = 14451-Z4M-000
Item no. 6 from the catalog card (second photo)
Application: HONDA GX120 GX140 GX160 GX200 GX240 GX270 GX340 GX390 engines
Original part, brand new.