Enables granulocyte colony-stimulating factor binding activity and granulocyte colony-stimulating factor receptor activity. Acts upstream of or within cellular response to granulocyte macrophage colony-stimulating factor stimulus. Located in plasma membrane. Is expressed in early conceptus; female reproductive system; and liver. Human ortholog(s) of this gene implicated in pulmonary alveolar proteinosis. Orthologous to human CSF2RA (colony stimulating factor 2 receptor subunit alpha). [provided by Alliance of Genome Resources, Apr 2022]