BWG Ultimax series high performance pumps (Formerly known as Vico) come in many different styles and HP's. They are found throughout the industry and are used by many different spa manufacturers. This side discharge, 2mbt, 48 or 56 frame wet end is used with a 4.0hp thru-bolt style motor. The motor used may be either a single or dual speed. The complete wet end includes: the volute, seal, impeller, wear ring, volute o-ring, seal plate and bolts and nuts.