Radiator Hose, Lower. PART NO: A-70248233. New lower radiator hose with an inside diameter of 1.75" on the smaller side and 2.187" on the larger side. This radiator hose fits multiple Allis-Chalmers Tractor models. (NOTE: Replaces 70248233V) Dim A (1)A - 2.187" Dim B (2)B - 1.750". . MODELS: Allis-Chalmers TRACTOR: 180 Allis-Chalmers TRACTOR: 185 Allis-Chalmers TRACTOR: 190 (Lower S/N 14450- > ) Allis-Chalmers TRACTOR: 190XT Allis-Chalmers TRACTOR: 190XTIII (Lower S/N 14450- > ).