All of our new parts are aftermarket replacements. Compatible with Minneapolis Moline Tractor(s) UNI (Tractor C1-14). Replaces Minneapolis Moline OEM Number(s) 10A4450. Replaces Mfg Number(s) MM-10. Inlet Inside Diameter: 2-1/2. Outlet Outside Diameter: 2. All States Ag Parts Item No.