A flow splitter for distributing agricultural products includes a splitter body extending between upstream and downstream ends and defining an inlet port and two or more outlet ports. The splitter body includes an inner flow surface defining an interior flow volume and two or more internal grooves extending radially outwardly from the inner flow surface. A divider of the flow splitter extends within the splitter body along a central axis and includes two or more divider walls extending radially outwardly from the central axis to a distal end positioned adjacent to the inner flow surface. The divider divides at least a portion of the interior flow volume into a plurality of internal flow chambers, each being aligned with a respective outlet port. A rib extends radially outwardly from the distal end of each respective divider wall such that each rib is received within a respective internal groove.