17936-0001 Jabsco Impeller 17936-0001 Jabsco Impeller Neoprene - Silhoulette Q - Replaces Perkins 0460027, Volvo Penta 842857, 844683, 845796, 875697. Replaces Johnson 814B , Caterpillar impeller 4L8470, Man impeller 50.06506-0073, Cummins impeller 3008503. Just the Impeller, no gasket