Oil Pressure Switch for Generac 99236 99236GS 099236 G099236 Generators Washers Fits Many Generac Generator Models: 9777-0, 9777-1, 9777-2, 9777-3, & 9777-4 - 4000xl 0042761 - GH220 0046732 - G26 0052331 - GH410