Dayco 72225 Radiator Coolant Hose - Lower

Dayco 72225 Curved Radiator Hose

The Dayco 72225 curved radiator hose is a lower coolant hose built for specific Jeep cooling system applications. Made from EPDM rubber and finished in black, it uses a dual I.D. hose design to match the different connection sizes required by the vehicle.

Compatible with 2005-2010 Jeep Grand Cherokee, lower, and 2006-2010 Jeep Commander, lower, this hose is built to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications. The Dayco Curved Radiator Hose line focuses on application-specific hose routing and fitment for replacement cooling repairs.

Key Features

• Brand: Dayco
• Part number: 72225
• Curved lower radiator coolant hose
• EPDM construction for cooling system service
• Dual I.D. hose with 1 19/32 in. end 1 inside diameter and 1 25/32 in. end 2 inside diameter
• Black finish
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• No heat shield and no protective sleeve

Product Details

Dayco 72225 is a molded-style lower radiator hose for Jeep cooling system service, shaped to follow the factory hose path and maintain proper coolant flow. The EPDM rubber construction is selected for use in engine cooling environments, while the dual inside diameters support the specific connection sizes used on the listed Jeep Grand Cherokee and Jeep Commander applications. If you are replacing a worn lower coolant hose on a 2005-2010 Jeep Grand Cherokee or 2006-2010 Jeep Commander, this part number provides a direct replacement option for the original routing and fit.

This part cross-references Gates 23036 for the same application.

Common Replacement Reasons

• Cracked or split lower radiator hose
• Coolant seepage at the hose connection
• Softening or swelling from heat and age
• Restricted coolant transfer from a deteriorated hose
• Loss of proper hose shape or routing

Installation Notes

Verify the vehicle year, model, and lower hose routing before installation. Inspect the hose necks, clamps, and surrounding cooling system components for wear or corrosion before fitting the new hose. Confirm the end diameters match the vehicle connection points and route the hose without twisting so the curved shape follows the factory path.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling system service. The 72225 is built as an application-specific replacement for Jeep Grand Cherokee and Jeep Commander lower radiator hose service.