Yanmar SD Series Saildrive Diaphragm-Part B, Part Number 196420-02722

Genuine Yanmar Saildrive Diaphragm Part B.

This is a genuine 196420-02722 Yanmar replacement diaphragm, Part B 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. 

This genuine Saildrive diaphragm bellows is part B. Part A is 196420-02712. 

Yanmar Part Number: 196420-02722

Previous part number: 196420-02721/ 196420-02720

Please note:

The diaphragm part A required is 196420-02712.

The outer securing band required is part number 196420-02740.

The inner securing band is part number 196420-02730.

The O-ring between the upper and lower leg is part number 24321-000750

For Yanmar diesel engines: 
SD20, SD25, SD30, SD31, SD40 and SD50 Saildrives.