HOSE, RADIATOR, INLET, ENGINE

Mounting Dimensions & Fitment
Inner Diameter (ID): This hose typically matches a 2.5-inch (63.5 mm) fitting, a standard size for heavy-duty Navistar cooling systems.
Clamp Size: For a 2.5-inch ID hose, you typically require a clamp that can accommodate an outside diameter (OD) of approximately 2.75 to 3.13 inches to account for the hose wall thickness and fitting barbs.
Recommended Hardware: Navistar often uses the 1616029C1 radiator inlet hose clamp for similar applications, which is rated for an inside diameter range of 2.25″ to 3.13″.