Dayco 70664 Radiator Coolant Hose

Overview of Dayco Curved Radiator Hose 70664

The Dayco Curved Radiator Hose 70664 is designed to provide reliable coolant flow for select Chevrolet, GMC, and Jaguar vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black single inside diameter hose with 1 3/4 inch diameter on both ends
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height measures 18 1/2 inches for precise fitment
• Compatible with Chevrolet Blazer, C10 Suburban, C20 Suburban, Jimmy, K10 Suburban, K20 Suburban, and Jaguar Vanden Plas, XJ6, XJS models

Dayco Curved Radiator Hose Product Line Details

The Curved Radiator Hose line by Dayco focuses on delivering hoses with precise bends and dimensions to match specific vehicle cooling system layouts. This product line emphasizes durability and compliance with SAE standards, ensuring that hoses like the 70664 maintain coolant flow integrity without the need for additional heat shields or protective sleeves.

Product Description and Specifications

The Dayco 70664 radiator coolant hose is a single inside diameter hose with both ends measuring 1 3/4 inches, designed to fit specific radiator connections. Made from EPDM, it offers resistance to heat, ozone, and coolant chemicals, which is critical for maintaining system reliability. The hose does not include a heat shield or protective sleeve, reflecting its application in areas with standard thermal exposure. Its trunk height of 18 1/2 inches ensures proper routing within the engine bay of compatible Chevrolet, GMC, and Jaguar models.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator hoses in Chevrolet Blazer and GMC Suburban models
• Addressing coolant leaks caused by hose degradation in Jaguar XJ6 and XJS vehicles
• Restoring proper coolant flow in Chevrolet and GMC K10 and K20 Suburban trucks
• Eliminating overheating issues related to compromised radiator hoses
• Maintaining engine cooling system integrity during routine maintenance

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to prevent burns. Verify that the hose diameters match the radiator and engine fittings exactly—both ends of the Dayco 70664 measure 1 3/4 inches inside diameter. Use appropriate clamps to secure the hose and check for leaks after installation. Avoid twisting or stretching the hose during installation to maintain its shape and performance.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70664 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The EPDM material provides durability against heat and chemical exposure. Warranty details should be confirmed with the original equipment provider or distributor, as Dayco typically offers coverage against manufacturing defects.