Dayco 70773 HVAC Heater Hose - Pipe To Water Pump

Overview of Dayco Curved Radiator Hose 70773

The Dayco Curved Radiator Hose 70773 is designed for reliable HVAC system performance in select Ford and Mercury vehicles. Engineered with durable EPDM material, this dual inside diameter hose supports efficient coolant flow and temperature regulation.

• Constructed from EPDM for heat and chemical resistance
• Dual inside diameters: 25/32 inch and 1 inch
• Black color for standard OEM appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 9 inches for precise fitment
• Compatible with Ford and Mercury models including Mustang, Bronco II, Taurus, and more

Detailed Product Description

The Dayco Curved Radiator Hose 70773 is a specialized HVAC heater hose designed to maintain optimal coolant circulation within the heating and cooling systems of various Ford and Mercury vehicles. Made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, this hose ensures durability and longevity under demanding engine conditions. The dual inside diameter design, with one end measuring 25/32 inch and the other 1 inch, allows for a secure and precise connection to different HVAC components. This hose does not include a heat shield or protective sleeve, focusing on straightforward installation and reliable performance.

About the Curved Radiator Hose Product Line

The Curved Radiator Hose line by Dayco offers hoses specifically shaped to accommodate complex routing in vehicle HVAC systems. This product line emphasizes precise fitment and material quality to support efficient coolant flow and system integrity. The 70773 part is part of this line, providing a tailored solution for Ford and Mercury models requiring a curved hose with dual inside diameters.

Common Applications and Problem Solving

• Replacement of worn or cracked HVAC heater hoses in Ford Mustang and Mercury Sable
• Resolving coolant leaks caused by hose degradation in Ford Bronco II and Ranger
• Maintaining proper heater core function in Mercury Capri and Ford Pinto
• Preventing overheating issues related to faulty radiator hose connections
• Ensuring consistent HVAC system performance in Ford Taurus and Mercury Bobcat

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70773, ensure the hose is routed without kinks or sharp bends to maintain coolant flow. Verify the correct orientation of the dual inside diameters to match the vehicle’s HVAC fittings. Use appropriate clamps to secure each end firmly, preventing leaks. It is recommended to inspect adjacent hoses and components for wear during installation to maintain overall system reliability.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70773 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for HVAC hoses. The EPDM material provides resistance to heat and coolant chemicals, contributing to the hose’s durability. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to support dependable automotive performance.