Dayco 71839 Radiator Coolant Hose - Lower - Pipe To Radiator

Overview of Dayco Curved Radiator Hose 71839

The Dayco Curved Radiator Hose 71839 is designed specifically for Ford and Mercury vehicles, including the Contour, Cougar, and Mystique models. This radiator coolant hose features a dual inside diameter design to ensure a precise fit and reliable coolant flow.

• Constructed from durable EPDM material for heat and chemical resistance
• Dual inside diameters: 1 1/16 inch and 1 1/4 inch for secure connections
• Black color for standard OEM appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 8 inches for proper routing in engine bay
• Part number 71839 for accurate identification and replacement

Details on the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line is engineered to provide reliable coolant transfer with precise bends that match OEM configurations. This product line focuses on delivering hoses that maintain coolant system integrity without the need for additional heat shields or protective sleeves, simplifying installation and maintenance. The 71839 hose exemplifies this approach with its dual inside diameter design and compliance with SAE standards.

Product Description and Specifications

The Dayco 71839 radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. Its black color matches typical OEM hoses, ensuring a consistent look under the hood. The hose features two different inside diameters—1 1/16 inch on one end and 1 1/4 inch on the other—allowing it to connect securely between components with varying sizes. It does not include a heat shield or protective sleeve, which is suitable for applications where additional protection is not required. The hose meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, confirming its suitability for automotive coolant systems. With a trunk height of 8 inches, it fits the routing requirements of Ford Contour, Mercury Cougar, and Mystique models.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Ford Contour, Mercury Cougar, and Mystique
• Resolving coolant leaks caused by hose degradation or swelling
• Maintaining proper coolant flow and preventing overheating
• Ensuring secure connections between radiator and engine components with dual inside diameter design
• Addressing hose failures due to heat and chemical exposure in the cooling system

Installation Notes and Tips

• Verify compatibility with your specific Ford or Mercury model before installation
• Ensure both hose ends fit securely on mating components with the specified inside diameters
• Inspect clamps and replace if necessary to prevent leaks
• Check routing to avoid kinks or contact with moving parts
• Allow engine to cool before removing old hose to avoid burns

Quality Assurance and Warranty

Dayco manufactures the 71839 radiator hose to meet stringent SAE standards, ensuring durability and performance in automotive cooling systems. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are designed for reliable service life in compatible Ford and Mercury vehicles.