Genuine Yanmar Saildrive Inner Securing Band.
This is a genuine 196420-02730 Yanmar Inner Securing Band for all SD20, SD25, SD30, SD31 and SD50 Saildrives.
Yanmar Saildrive's Diaphragm bellows should be changed every 7 years, often as an insurance requirement.
Yanmar Part Number 196420-02730
Please note:
Diaphragm Part A required is 196420-02712.
Diaphragm Part B is Part Number 196420-02720.
The outer securing band is Part Number 196420-02740.
For Yanmar diesel engines:
SD20, SD25, SD30, SD31, SD40 and SD50 Saildrives.
