Dayco 70779 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 70779

The Dayco Curved Radiator Hose 70779 is designed to provide reliable coolant flow for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and efficient cooling system performance for models like the Nova, Omega, Phoenix, and Skylark.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Dual inside diameter hose with 1 1/2 inch and 1 3/4 inch ends for precise fitment
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color for standard OEM appearance
• Trunk height of 15 1/2 inches for proper routing in engine bay

Features of the Curved Radiator Hose Line

The Dayco Curved Radiator Hose product line focuses on delivering hoses that match specific vehicle requirements with precision. This line includes hoses designed with varying inside diameters and curvature to accommodate different radiator and engine configurations. The 70779 part number is part of this line, offering a dual inside diameter design that supports proper coolant flow and fitment in multiple GM models.

Detailed Product Description

This radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, which helps maintain hose integrity over time. The dual inside diameter design features one end measuring 1 1/2 inches and the other 1 3/4 inches, allowing it to connect different sized fittings securely. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator hose. Its trunk height of 15 1/2 inches ensures it fits correctly within the engine compartment without kinking or stretching.

Applications and Common Issues Addressed

• Replacement for worn or cracked radiator coolant hoses in Buick Nova and Chevrolet Omega
• Solves coolant leaks caused by hose degradation in Oldsmobile Phoenix and Pontiac Skylark
• Prevents overheating issues related to compromised coolant flow
• Restores proper coolant circulation in vehicles with mismatched or damaged hoses
• Addresses fitment problems due to incorrect hose diameter or length

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Verify the hose ends match the radiator and engine fitting diameters (1 1/2 inch and 1 3/4 inch). Use appropriate clamps to secure the hose and check for leaks after installation. Avoid twisting or stretching the hose during installation to maintain its integrity and fitment.

Quality Assurance and Warranty

The Dayco Curved Radiator Hose 70779 complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to meet OEM specifications for durability and performance.