Dayco 72904 Radiator Coolant Hose - Upper

Curved Upper Radiator Hose for Ram Trucks

Replace a worn or leaking cooling line with the Dayco Curved Radiator Hose, Part Number 72904. This upper radiator coolant hose is built for select Ram 2500 and Ram 3500 applications and is shaped to follow the factory routing for a clean, direct replacement.

• Dayco Curved Radiator Hose, Part Number 72904
• Upper radiator coolant hose for select Ram 2500 and Ram 3500 trucks
• EPDM construction with black finish
• Dual I.D. hose design with 1 3/4 in. inside diameter at both ends
• Outside diameter: 2 5/32 in. at both ends
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height: 20 1/2 in.

Product Details

The Dayco 72904 is a curved radiator hose made from EPDM, a material commonly used in cooling system service for its resistance to heat and coolant exposure. Its dual I.D. hose design and matched end diameters help it align with the original upper hose routing on compatible Ram trucks. This part number, 72904, is listed for 2011-2012 Ram 2500 and Ram 3500, as well as 2015-2018 Ram 2500 and Ram 3500 upper radiator hose applications.

Dayco’s Curved Radiator Hose line focuses on replacement hoses shaped for specific cooling system layouts, helping maintain proper hose routing in vehicles where a straight hose would not match the factory path. For Ram 2500 and Ram 3500 owners searching for an upper radiator hose replacement, Dayco 72904 provides a direct-fit option for the listed model years.

Common Cooling System Issues

• Upper radiator hose cracking or splitting
• Coolant seepage at the hose connection points
• Soft, swollen, or heat-aged hose material
• Incorrect hose shape after prior repair work
• Loss of cooling system integrity from a worn coolant hose

Installation Notes

Verify the hose end diameters and routing before installation. This upper hose is specified for Ram 2500 and Ram 3500 applications listed above, so confirm year, model, and position match your vehicle before service. Inspect clamps, necks, and adjacent cooling components for wear or corrosion during replacement.

Quality Assurance

This Dayco radiator coolant hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for cooling system hose applications. Part Number 72904 is an OE-style replacement for the listed Ram truck fitments.