Ferris 5021163 is the nipple Clinton Tractor supplies for this application. It is listed as fitting 26 Ferris models.
What 5021163 fits
This nipple covers 26 Ferris models. Commonly ordered for the 320 - 20HP Briggs & Stratton, H1618B - Hydro Drive, 16HP Briggs & Stratton (S/N: H2166 & Above), H2520K - Hydro Drive, 20HP Kohler (S/N: H1360 & above). If your machine isn't listed, check the serial number before ordering.

