313-8220-137 is a power take off (PTU) housing built with a 1-1/2 in. NPT port and a 2 in. housing size. It serves as the mounting and porting structure for PTU hydraulic components, providing the threaded port connection needed for hydraulic pump or motor plumbing.Interchanges:WA20-51-0234FeaturesPTU (Power Take Off Unit) Housing1-1/2 in. NPT port2 in. housing sizeTech SpecsPort: 1-1/2 in. NPTHousing size: 2 in.