I replaced the impeller 1994 40 4 cylinder, gaskets too but I have an extra seal or washer thats split { broken }. I dont know where it's from because it seemed to just fall out when I dropped lower unit..<br />Looks like a black washer for a garden hose only thicker.<br />The only thing I can think of from the drawing in my Seloc manual is it's a " centrifugal slinger " that goes on the driveshaft & snugs against the waterpump housing , I have a thicker black rubber ( I belive it's the rubber seal } there but does anyone know if theres supposed to be 2 washer type things on driveshaft pressed flush to the WP body ? ?<br />The shiftshaft oil seal is intact & I didnt remove the water pump base so it shouldnt be oil seal under WP base, @ least I dont think so??<br />Sorry for the long post, I would appreciate any help, please..thanks. ...Alan