Nut(4jh)

Ensure you order all the parts required for completing a satisfactory engine overhaul - all new fasteners used throughout will enable the correct torque to be applied during reassembly, then you will know that nothing has been left to chance on this vital crankshaft/con-rod/piston assembly.
Other related parts you may wish to view:

9310126154
9310126156
1WG1141600
4TV1141600
1WG1141610
4TV1141610
1WG1141620
4TV1141620
1WG1141630
4TV1141630
1WG1141640
4TV1141640
3TJ1163101
3TJ1163601
3TJ1163801
3TJ1161000
3TJ1161020
3TJ1161040
2TK1163300
9345016068
3TJ1165000
1WG1165400
9017907531
1WG1165600
1WG1165610
1WG1165620
1WG1165630

Don't forget to order the gaskets & seals you require and perhaps this pro-workshop gasket sealant: 08C70K0234M.

This component may have other, sometimes unrelated, applications within the Yamaha model range. So, please always check by the part-number rather than the description.