Pentair Challenger High PSI, High Flow and Waterfall, OEM Square Housing Gasket, Complete Pump O-Ring Rebuild Kit If you would like to recieve the parts in the photo, order from BadAss Pool Supply Diffuser O-Ring 355331, and a Diffuser Quad Ring 355030, New and Old Style Lid O-Ring Pentair OEM Front Housing Square Gasket 355329 Drain Plug O-Rings (2) 192115, and a Strainer Pot O-Ring 355330 US Seal PS-200 Shaft Seal, O-Ring Lube and Directions.