Continental 66839 Radiator Coolant Hose - Lower

Radiator Coolant Hose for OE Fit

This Continental molded radiator coolant hose is built for the lower cooling circuit on select Dodge Durango and Jeep Grand Cherokee applications. Continental 66839 uses an EPDM tube and cover with synthetic reinforcement to match OE-style routing and fitment.

With a 1.750-inch inside diameter at both ends and an 18.700-inch length, this hose is shaped for direct replacement in the vehicle’s cooling system. Continental 66839 is a practical choice when replacing a worn lower radiator coolant hose on a Jeep Grand Cherokee or Dodge Durango.

Key Features

• Lower radiator coolant hose for select Chrysler, Dodge, and Jeep applications
• EPDM tube and cover with synthetic reinforcement
• Built to meet or exceed SAE 20R4EC Class D1 specifications
• Exact OEM configuration for proper routing and fit
• 1.750-inch inside diameter at both ends
• 18.700-inch overall length

Product Details

Continental Molded 66839 is a radiator coolant hose designed to transfer glycol-based coolant throughout the cooling system. The molded shape follows the original equipment layout, helping maintain correct hose routing on the lower side of the radiator circuit. This part cross-references Gates 23689 for the same application.

Compatible With 2011-2020 Jeep Grand Cherokee, lower; 2011-2012 Dodge Durango, lower; and 2013-2020 Dodge Durango, lower without oil cooler. The fitment coverage makes this hose a direct replacement option for common lower hose service on these vehicles.

Common Replacement Reasons

• Cracked or split lower radiator hose
• Coolant seepage at the hose body or ends
• Softening, swelling, or collapse from heat cycling
• Incorrect hose shape after prior repair
• Loss of proper coolant flow in the lower cooling circuit

Installation Notes

Verify hose routing, end diameter, and vehicle configuration before installation. This application is molded and must match the original lower hose path, especially on 2013-2020 Dodge Durango models without oil cooler. Inspect adjoining clamps, radiator necks, and coolant connections for wear or corrosion before installing the new hose.

Quality Assurance

Continental designs this molded hose to OE configuration and material standards for dependable cooling-system service. The EPDM construction and synthetic reinforcement are specified to meet or exceed SAE 20R4EC Class D1 requirements.