Dayco 70399 Radiator Coolant Hose - Lower or Upper

Overview of Dayco Curved Radiator Hose 70399

The Dayco Curved Radiator Hose 70399 is designed for reliable coolant flow in select Chevrolet and Jeep vehicles. Engineered with durable EPDM material, this dual inside diameter hose supports efficient engine cooling for models like the Camaro, Cherokee, Comanche, Wagoneer, and Wrangler.

• Constructed from high-quality EPDM for heat and chemical resistance
• Dual inside diameters: 1 1/2 inch and 1 3/4 inch ends for precise fitment
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• Black color for standard OEM appearance
• Trunk height of 12 1/2 inches to accommodate curved routing

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 match OEM configurations. This ensures proper coolant flow and fitment in complex engine bay layouts. The 70399 part exemplifies this with its tailored dimensions and material compliance, making it suitable for various Chevrolet and Jeep models requiring a curved radiator coolant hose.

Product Specifications and Features

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 a 1 1/2 inch opening on one end and a 1 3/4 inch opening on the other, 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. It meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, ensuring it adheres to industry standards for coolant hoses.

Compatible Vehicles and Applications

• Chevrolet Camaro radiator coolant system maintenance
• Jeep Cherokee cooling system hose replacement
• Jeep Comanche radiator hose repair or upgrade
• Jeep Wagoneer coolant hose replacement
• Jeep Wrangler radiator hose fitment and service

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70399, ensure the hose is routed without kinks or sharp bends beyond its designed curve. Verify the correct orientation of the dual inside diameters to match the vehicle’s radiator and engine fittings. Use appropriate clamps to secure the hose ends and check for leaks after installation. It is recommended to inspect adjacent components for wear or damage during replacement.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70399 to meet SAE specifications, providing assurance of material and dimensional quality. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Refer to Dayco’s official documentation for exact warranty terms.