Dayco 71311 HVAC Heater Hose - Heater To Valve

Overview of Dayco Curved Radiator Hose 71311

The Dayco Curved Radiator Hose 71311 is designed for reliable HVAC system performance in select Buick, Oldsmobile, Pontiac, and Toyota vehicles. Engineered with durable EPDM material, this hose ensures consistent heat resistance and flexibility for efficient coolant flow.

• Constructed from EPDM material for heat and chemical resistance
• Black single inside diameter hose with 5/8 inch ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 5 1/4 inches for precise fitment
• Compatible with multiple Buick, Oldsmobile, Pontiac, and Toyota models

Detailed Product Description

The Dayco Curved Radiator Hose 71311 is part of the Curved Radiator Hose product line, which focuses on delivering hoses designed to accommodate specific HVAC system layouts requiring curved configurations. This hose is made 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 a 5/8 inch inside diameter, ensuring a secure connection to the vehicle’s cooling system components. The hose does not include a heat shield or protective sleeve, which is typical for this type of single inside diameter hose. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive HVAC systems.

Compatible Vehicles and Applications

This Dayco Curved Radiator Hose 71311 is compatible with various models from Buick, Oldsmobile, Pontiac, and Toyota, including the Toyota 4Runner (1998), Buick Century, Oldsmobile Cutlass Ciera, Pontiac Bonneville, and others. It is specifically designed to replace HVAC heater hoses in these vehicles, ensuring proper coolant flow and heater core function.

• Replaces worn or cracked heater hoses causing coolant leaks
• Restores proper coolant circulation to the heater core
• Prevents overheating issues related to faulty HVAC hoses
• Eliminates coolant odor inside the vehicle cabin
• Addresses hose swelling or softening due to age or heat exposure

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71311, ensure the engine is cool to avoid burns from hot coolant. Verify the hose routing matches the original configuration to prevent kinks or interference with other engine components. Use appropriate clamps to secure both 5/8 inch hose ends firmly. Inspect adjacent hoses and connections for wear during installation to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose line to meet industry SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to manufacturer standards for durability and reliability in automotive HVAC applications.