BadAss Pool Supply Hayward Northstar Go Kit, Complete Pump O-Ring Rebuild Kit (Pumps Prior 2003) If you would like to recieve the parts in the photo, order from BadAss Pool Supply Diffuser O-Ring SPX4000Z1 Lid O-Ring CX400G, Seal Plate O-Ring SPX4000T, Pump Union O-Rings SPX4000Z1 Drain Plug O-Rings (2) US Seal PS-201 Shaft Seal, O-Ring Lube and Directions.