Dayco 70423 Radiator Coolant Hose - Lower or Upper

Overview of Dayco Curved Radiator Hose 70423

The Dayco Curved Radiator Hose 70423 is designed specifically for Ford F-100, F-250, and F-350 models. Engineered to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, this dual inside diameter hose ensures reliable coolant flow and durability under demanding conditions.

• Constructed from durable EPDM material for heat and chemical resistance
• Dual inside diameters: 1 3/4 inches and 2 inches for precise fitment
• Black color for standard OEM appearance
• Trunk height of 12 3/4 inches for proper routing
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• Does not include heat shield or protective sleeve

Details on the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and dual inside diameters to accommodate complex radiator and coolant system layouts. This product line is engineered to maintain coolant integrity and system pressure in Ford trucks, including the F-100, F-250, and F-350, ensuring compatibility and performance in demanding environments.

Product Description and Specifications

The Dayco 70423 radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. Its dual inside diameter design (1 3/4 inches on one end and 2 inches on the other) allows for a secure and precise connection between different components in the cooling system. The hose’s black color matches OEM standards, and its 12 3/4 inch trunk height supports proper installation and routing within the engine bay. This hose does not include a heat shield or protective sleeve, so it is intended for applications where additional protection is not required.

Compatible Applications and Common Issues Addressed

• Replacement for worn or cracked radiator coolant hoses on Ford F-100, F-250, and F-350 trucks
• Prevents coolant leaks caused by hose degradation or improper fit
• Maintains proper coolant flow and system pressure to avoid engine overheating
• Addresses hose swelling or collapse due to heat exposure
• Restores OEM coolant system integrity for reliable vehicle operation

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to prevent burns. Verify the hose end diameters match the radiator and engine fittings for a secure connection. Use appropriate clamps to secure the hose ends and check for leaks after installation. Since this hose does not include a heat shield or protective sleeve, inspect the routing path to avoid contact with sharp edges or excessive heat sources.

Quality Assurance and Warranty

Dayco manufactures the 70423 radiator coolant hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for durability and performance. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to support reliable operation in Ford F-100, F-250, and F-350 vehicles.