Yamaha Cylinder Head Nut TZ250-350A-G. also TZ750A-F, Pt. No. 90179-08187-00, 383-11171-01
Yamaha TZ250-350A-G 1973-1980, TZ750A-F 1974-1979 cylinder head nuts, replacement of the original Pt.No. 90179-08187-00 and 383-11171-01 which are no longer available. Manufactured in Aluminium, and Anodised Blue. Tested to 18lb/ft or 24.4Nm. Sold singly. It is recommended that you fit new copper washers when replacing the head nuts. See item 787.