Dayco 71544 HVAC Heater Hose - Pipe To Pipe (Inlet), Valve To Pipe-1 or Water Pump To Valve

Overview of Dayco Curved Radiator Hose 71544

The Dayco Curved Radiator Hose 71544 is designed to provide reliable coolant flow in HVAC systems for select Cadillac, Chevrolet, GMC, and Nissan vehicles. Engineered with durable EPDM material, this black single inside diameter hose ensures consistent performance under typical operating conditions.

• Constructed from EPDM for heat and chemical resistance
• Black color for standard OEM appearance
• End 1 and End 2 inside diameter: 23/32 inches
• Single inside diameter hose type for precise fit
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height dimension of 6 inches

Detailed Product Description

The Dayco Curved Radiator Hose 71544 is part of the Curved Radiator Hose product line, which focuses on delivering hoses shaped to fit specific radiator and heater core connections. This hose is manufactured from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, making it suitable for HVAC heater hose applications. Both ends of the hose have an inside diameter of 23/32 inches, ensuring a secure and leak-free connection in the cooling system. The hose does not include a heat shield or protective sleeve, which is typical for this type of HVAC heater hose. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant systems.

Compatible Vehicles and Applications

This Dayco Curved Radiator Hose 71544 is compatible with various models from Cadillac, Chevrolet, GMC, and Nissan, including:

• Cadillac Seville
• Chevrolet Express 1500 and Express 2500
• GMC Savana 1500 and Savana 2500
• Nissan 240SX and Quest

It is designed specifically for HVAC heater hose applications in these vehicles, ensuring proper coolant flow and temperature regulation within the heating system.

Common Issues Addressed by This Hose

• Replacement of cracked or leaking heater hoses
• Resolving coolant leaks causing HVAC system inefficiency
• Preventing overheating due to compromised hose integrity
• Maintaining proper coolant circulation in heater core
• Ensuring OEM fit and function in specified vehicle models

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71544, ensure the hose is properly seated on the fittings with secure clamps to prevent leaks. Inspect the surrounding components for wear or damage during replacement. Since this hose does not include a heat shield or protective sleeve, verify that it is routed away from high-heat sources to avoid premature wear. Use the correct inside diameter connections (23/32 inches) to maintain system integrity.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71544 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 durability against heat and coolant exposure. Warranty details are subject to Dayco's standard policies; please refer to official documentation for specific coverage information.