The Aqua-Flo Flo-Master XP3 4 Hp complete wet end has a 2.5" intake and 2.5" discharge. Everything you need to replace your old wet end is included. The complete Wet end includes the volute, seal assembly, impeller, wear ring, volute o-ring, suction cover, drain plug, and suction screws. Always choose a genuine Gecko part when replacing parts.