The General Pump 650048 is a gasket for the rear cover on WM Series pumps. Compatible with models WM0515C, WM0815C, WM1015C, WM1615C, WM2315C, WM2415CL, WM3015C, WM3615C, WM4215C, WM2315C, WM3015C, and WM4215C. A genuine OEM part. Ensures a proper fit and materials are used when installed in the recommended models.