The front part of the dust boot number is the same 20487239/40/41/42/43/44/45/46/47/48/51, followed by size differentiation;
The corresponding piston outer diameters are 27/28/30/32/34/36/38/40/41/44/46
The link to the oil seal is this:https://www.aliexpress.com/item/1005005712702273.html
The corresponding piston outer diameters are 27/28/30/32/34/36/38/40/41/44/46
The link to the oil seal is this:https://www.aliexpress.com/item/1005005712702273.html
