1.5" inlet, 2 x 1" outlets Turns freely, drain plug comes out clean I don't have tools to remove the split ring 1 3/4" spacing for bolts on drive plate 5" spacing for mounting bolts in casting Stamped JT 101825 Was used on 1960s Chris Craft Chevy V8s for fresh water engine cooling. They were available for clockwise and counter clockwise rotations.