Dayco 70239 HVAC Heater Hose - Heater To Tee, Heater To Tee (Inlet) or Pipe To Heater

Overview of Dayco Curved Radiator Hose 70239

The Dayco Curved Radiator Hose 70239 is designed for reliable HVAC system performance in select Buick, Cadillac, Chevrolet, Dodge, Mercury, Nissan, Oldsmobile, Saturn vehicles. This HVAC heater hose features a curved design and consistent 3/4 inch inside diameter on both ends, ensuring proper coolant flow and fitment.

• Constructed from durable EPDM material for heat and chemical resistance
• Black color for standard OEM appearance
• Single inside diameter hose with 3/4 inch ends for consistent connection
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 6 inches for precise fit in HVAC systems

Detailed Product Description

The Dayco Curved Radiator Hose 70239 is engineered from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose maintains a uniform 3/4 inch inside diameter on both ends, facilitating smooth coolant flow without restriction. The curved design accommodates specific HVAC routing requirements in vehicles such as the Buick Cavalier, Cadillac Seville, Chevrolet Cavalier, Dodge Charger, Mercury Villager, Nissan Quest, Oldsmobile Firenza, and Saturn Vue. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for heater hoses. The hose does not include a heat shield or protective sleeve, focusing on core durability and fitment.

About the Curved Radiator Hose Product Line

The Curved Radiator Hose line by Dayco specializes in hoses designed with precise bends to fit OEM HVAC systems without modification. This product line addresses the need for exact routing and fitment in various vehicle models, reducing installation complexity and potential coolant leaks. The 70239 part is a single inside diameter hose tailored for specific applications requiring a 3/4 inch connection on both ends.

Common Applications and Issues Addressed

• Replacement of worn or cracked HVAC heater hoses in Buick Cavalier and Chevrolet Cavalier
• Resolving coolant leaks in Dodge Charger and Mercury Villager HVAC systems
• Maintaining proper coolant flow in Nissan Quest and Saturn Vue heater circuits
• Preventing overheating issues caused by deteriorated hoses in Cadillac Seville and Oldsmobile Firenza
• Ensuring secure hose connections in HVAC systems requiring curved hose routing

Installation Notes and Tips

• Verify hose inside diameter and length match OEM specifications before installation
• Ensure clamps are properly tightened to prevent leaks without damaging the hose
• Inspect surrounding components for wear or damage during replacement
• Use appropriate coolant compatible with EPDM material
• Check for proper hose routing to avoid kinks or contact with hot engine parts

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70239 to meet SAE standards, ensuring consistent quality and performance. The EPDM material provides durability against heat and chemical exposure typical in automotive HVAC systems. While specific warranty details are not provided, Dayco products generally adhere to industry quality controls and reliability standards.