Washer, Plain (646) G8-ef 1990

The upper casing assembly is as well engineered as the rest of the superb Yamaha marine engine components, but, as with all mechanical parts working in a harsh, corrosive environment, it will eventually require refurbishment using new replacement components and fasteners.
The spares situation remains surprisingly good, for now at least, a testament to the longevity and enduring popularity of the type of engine this component fits.
This component is perhaps one of a number you may require; more are listed below:

6E545111028D
6R34279141
6R34279241
6E54515500
6E54276900
9360812M05
9011908M78
9011908078
6G5411370294
6G54113702CA
6E54272400
6G51258100
6G545113A1
6G545113A2
9011908M79
9757508430
9709508045
9708008045
6G541131015B
6G54113101CA
6G545114A0
6G545114A1
9709508030
9708008030
64D41132005B
64D4113200CA
6G541134A0
6G541134A1
9709508045
9708008045
6E514711015B
6E51471101CA
6E51473700
6E54512300
6E541135A0

Add as many items as you wish to the same shopping cart, new bolts, nuts 9538008700 9018305M02 and washers 9299008600 9299008100 (to replace those that are corroded too badly to re-use) for example, and still only pay the same single fixed price shipping cost.

Gasket sealant (professional quality): 08C70K0234M.

Be aware that this component may have other applications within the Yamaha model range. Please ensure the part-numbers you order are correct for your model.