Dayco 71939 Radiator Coolant Hose - Lower - Radiator To Thermostat

Overview of Dayco Curved Radiator Hose 71939

The Dayco Curved Radiator Hose 71939 is designed specifically for Ford and Mercury vehicles, including the Sable and Taurus models. This branched radiator coolant hose is constructed from durable EPDM material, ensuring reliable performance in cooling system applications.

• Material: EPDM for heat and chemical resistance
• Color: Black
• Branched hose design with three inside diameters: 1 15/32", 1 15/32", and 23/32"
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 11 inches
• Does not include heat shield or protective sleeve

Detailed Product Description

The Dayco Curved Radiator Hose 71939 is engineered to maintain optimal coolant flow within the radiator system of select Ford and Mercury vehicles. Made from EPDM, this hose offers resistance to heat, ozone, and coolant chemicals, which helps extend its service life. The branched hose design features three different inside diameters—1 15/32 inches on both End 1 and End 2, and 23/32 inches on End 3—allowing it to connect multiple points within the cooling system efficiently. This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for durability and performance. The black color and 11-inch trunk height provide a precise fit and appearance consistent with original equipment.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and branches to accommodate complex cooling system layouts. This product line is designed to replace OEM hoses that require precise curvature and multiple connection points, such as those found in Ford Sable and Taurus models. The 71939 part number is part of this line, offering a branched hose solution that supports efficient coolant routing without the need for additional fittings or modifications.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Ford Sable and Mercury Taurus vehicles
• Resolving coolant leaks caused by hose deterioration or damage
• Maintaining proper coolant flow to prevent engine overheating
• Addressing hose failures due to exposure to heat and chemicals
• Ensuring compatibility with factory cooling system configurations

Installation Notes and Tips

• Verify hose diameters and branch locations match your vehicle’s cooling system
• Inspect all hose clamps and replace if necessary to ensure a secure fit
• Drain coolant before removing the old hose to avoid spills
• Check for any signs of corrosion or damage on radiator and connectors
• After installation, refill coolant and bleed the system to remove air pockets

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71939 to meet SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry standards for durability and reliability. Using this hose helps maintain the integrity of the cooling system in Ford Sable and Mercury Taurus vehicles.