Dayco 71770 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71770

The Dayco Curved Radiator Hose 71770 is designed for reliable coolant flow in Ford and Mercury vehicles, specifically the Cougar and Thunderbird models. Constructed from durable EPDM material, this branched radiator coolant hose ensures consistent performance under varying engine conditions.

• Material: EPDM for heat and chemical resistance
• Color: Black
• Branched hose design with three inside diameters: 1 15/32" (Ends 1 and 2), 1" (End 3)
• Protective sleeve included for added durability
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height: 14 3/4"
• Compatible with Ford Cougar and Mercury Thunderbird

Detailed Product Description

The Dayco Curved Radiator Hose 71770 is engineered to maintain optimal coolant circulation within the cooling system of select Ford and Mercury vehicles. Made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, this hose withstands the demanding environment of the engine bay. The branched hose design features three connection points with precise inside diameters—1 15/32 inches on two ends and 1 inch on the third—allowing for secure fitment and efficient coolant routing.

Equipped with a protective sleeve, this hose offers enhanced abrasion resistance, extending its service life. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses. The trunk height of 14 3/4 inches supports proper installation and fitment within the cooling system layout of the Ford Cougar and Mercury Thunderbird.

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 configurations. This product line addresses the need for precise hose shapes that fit OEM routing paths, reducing the risk of kinks or improper coolant flow. The 71770 part is a branched hose variant within this line, designed to replace factory hoses in compatible vehicles without modification.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Ford Cougar and Mercury Thunderbird
• Resolving coolant leaks caused by hose degradation
• Preventing overheating due to restricted coolant flow
• Addressing hose failures from abrasion or heat exposure
• Maintaining proper coolant circulation in branched hose configurations

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Verify the inside diameters of the hose ends match the vehicle’s radiator and engine fittings. The protective sleeve on the Dayco 71770 hose helps prevent abrasion, but care should be taken to route the hose away from sharp edges or moving parts. Use appropriate clamps to secure the hose ends and check for leaks after installation.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71770 to meet strict SAE specifications, including J20R4 Class D-1 and J1684 Type EC, ensuring durability and performance. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and reliability.