Dayco 71666 Radiator Coolant Hose - Lower - Water Pump To Water Manifold

Overview of Dayco Curved Radiator Hose 71666

The Dayco Curved Radiator Hose 71666 is designed specifically for Jaguar Vanden Plas, XJ6, and XJS models. This radiator coolant hose features a curved design and is constructed from durable EPDM material, ensuring reliable performance in cooling system applications.

• Material: EPDM for heat and chemical resistance
• Color: Black
• End 1 Inside Diameter: 1 9/16 inches
• End 2 Inside Diameter: 1 9/16 inches
• Hose Type: Single inside diameter hose
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk Height: 9 inches
• Does not contain heat shield or protective sleeve

Detailed Product Description

The Dayco Curved Radiator Hose 71666 is engineered to meet the cooling system requirements of select Jaguar vehicles, including the Vanden Plas, XJ6, and XJS. Made from EPDM (ethylene propylene diene monomer) rubber, this hose offers excellent resistance to heat, ozone, and coolant chemicals, which helps maintain system integrity under demanding conditions. Both ends of the hose have an inside diameter of 1 9/16 inches, providing a consistent fit for the radiator connections. The hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses. The curved design and 9-inch trunk height allow for proper routing within the engine bay without kinking or restricting coolant flow.

Applications and Common Issues Addressed

• Replacement of worn or cracked radiator coolant hoses on Jaguar Vanden Plas, XJ6, and XJS
• Prevention of coolant leaks caused by hose degradation or swelling
• Restoration of proper coolant flow to avoid engine overheating
• Addressing hose collapse or blockage due to age or heat exposure
• Maintaining cooling system pressure and efficiency

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71666, ensure the hose is routed without sharp bends or twists to maintain coolant flow. Verify that the inside diameters match the radiator and engine fittings for a secure connection. Use appropriate clamps to secure the hose ends, and inspect the cooling system for any additional wear or damage during replacement. Since this hose does not include a heat shield or protective sleeve, take care to avoid contact with high-temperature components that could accelerate wear.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71666 to meet SAE specifications, providing assurance of material quality and dimensional accuracy. The EPDM construction supports durability in automotive cooling systems. Warranty details are subject to Dayco's standard policies and may vary; consult product documentation or manufacturer resources for specific coverage information.