Dayco 72639 Radiator Coolant Hose - Lower or Lower - Engine To Oil Cooler

Overview of Dayco Curved Radiator Hose 72639

The Dayco Curved Radiator Hose 72639 is designed for reliable coolant flow in Ford and Lincoln vehicles, including Explorer, Flex, and MKT models. Engineered with durable EPDM material, this branched radiator coolant hose ensures consistent performance under varying temperatures.

• Constructed from EPDM for heat and chemical resistance
• Branched hose design with multiple inside diameters (1 1/2" and 5/8")
• Protective sleeve included for added durability
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• Compatible with Ford Explorer, Flex, and Lincoln MKT

Detailed Product Description

The Dayco Curved Radiator Hose 72639 is a branched radiator coolant hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. This hose features two larger ends with an inside diameter of 1 1/2 inches and two smaller ends at 5/8 inches, accommodating specific coolant routing requirements. The outside diameters correspond accordingly, ensuring a secure fit. The hose includes a protective sleeve to guard against abrasion and wear, although it does not contain a heat shield. With a trunk height of 24 1/2 inches, it is designed to fit precisely within the cooling system of select Ford and Lincoln vehicles.

Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and branches to match OEM coolant system layouts. This product line addresses complex routing needs in modern engines, offering hoses that maintain coolant flow efficiency while fitting tightly within engine compartments. The 72639 part number is part of this line, ensuring compatibility and performance for vehicles requiring branched hose configurations.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Ford Explorer, Flex, and Lincoln MKT
• Resolving coolant leaks caused by hose degradation or damage
• Maintaining proper coolant flow to prevent engine overheating
• Addressing fitment issues with OEM hoses that have complex bends or branches
• Preventing abrasion damage with the included protective sleeve

Installation Notes and Tips

• Ensure the hose is routed according to the vehicle’s cooling system layout to avoid kinks
• Check all hose connections for secure clamps to prevent leaks
• Inspect the protective sleeve for proper positioning during installation
• Replace any worn clamps or fittings to maintain system integrity
• Verify compatibility with Ford Explorer, Flex, and Lincoln MKT models before installation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72639 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, ensuring compliance with industry standards for coolant hoses. The EPDM material and protective sleeve contribute to the hose’s durability and resistance to heat and chemicals. While specific warranty details are not provided, Dayco products typically adhere to manufacturer quality controls to support reliable vehicle operation.