The Oring 183 is the cheapest item from this partsfiche.
The O-ring,6x1.7 is the most widely applied product in the Z50R 1997 (V) USA GASKET KIT B ( two times ).
A sample from the products for the Gasket Kit B include: Oring 183, Gasket Crank Case (nas), O-ring,8x1.7, O Ring 107x2.