Dayco 88398 HVAC Heater Hose - Heater To Pipe or Heater To Pipe-1

Reliable HVAC Heater Hose for Ford, Infiniti, Mercury, and Nissan

The Dayco Small I.D. Heater Hose 88398 is engineered to meet the specific needs of HVAC systems in select Ford, Infiniti, Mercury, and Nissan vehicles. Designed with durable EPDM material and a protective sleeve, this hose ensures consistent performance in heating applications.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black single inside diameter hose with 23/32 inch ends for precise fit
• Includes a protective sleeve to enhance durability and prevent abrasion
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Ford Cougar, Mercury Cougar, Nissan Pathfinder, Infiniti QX4, and Ford Thunderbird models

About the Dayco Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on delivering hoses with smaller inside diameters tailored for HVAC heater core connections. This product line emphasizes material quality and compliance with SAE standards to ensure reliable heat transfer and long service life. The 88398 part number is a representative example, featuring a single inside diameter design and protective sleeve for enhanced performance in automotive heating systems.

Product Details and Specifications

The Dayco 88398 heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. Both ends of the hose have an inside diameter of 23/32 inches, providing a consistent and secure connection. The hose is black in color and includes a protective sleeve to guard against wear and abrasion, although it does not contain a heat shield. It complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for HVAC heater hoses. The trunk height of 6 inches supports proper routing within the engine bay.

Applications and Common Issues Addressed

• Replacement of worn or cracked heater hoses in Ford Cougar and Thunderbird models
• Restoring proper coolant flow in Nissan Pathfinder and Infiniti QX4 HVAC systems
• Preventing leaks caused by hose degradation or abrasion
• Maintaining efficient heating performance in Mercury Cougar vehicles
• Ensuring compliance with OEM specifications for HVAC hose replacements

Installation Notes and Tips

When installing the Dayco 88398 heater hose, ensure the hose ends are clean and free of debris before attachment. The single inside diameter design simplifies fitting onto heater core and engine connections. Use appropriate clamps to secure the hose and prevent leaks. Avoid twisting or kinking the hose during installation to maintain proper coolant flow. Inspect surrounding components for wear to prevent premature hose damage.

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 88398 to meet stringent SAE specifications, ensuring durability and reliable performance in automotive HVAC systems. While specific warranty details are not provided, Dayco products typically adhere to industry quality standards and are designed for long-term service in compatible Ford, Infiniti, Mercury, and Nissan vehicles.