Dayco 87999 HVAC Heater Hose - Connector To Engine

Overview of Dayco Small I.D. Heater Hose 87999

The Dayco Small I.D. Heater Hose 87999 is designed specifically for HVAC systems in select Ford and Mazda vehicles. Engineered with durable EPDM material, this hose ensures reliable performance in heating applications for models like the Ford Escape and Mazda Tribute.

• Constructed from high-quality EPDM for heat and chemical resistance
• Dual inside diameter hose with 5/8 inch and 3/4 inch ends
• Complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards
• Black color for standard OEM appearance
• Trunk height of 12 1/2 inches for precise fitment

Detailed Product Description

This HVAC heater hose from Dayco features a dual inside diameter design, with one end measuring 5/8 inch and the other 3/4 inch, allowing for versatile connection within the heating system. Made from EPDM, the hose offers resistance to heat, ozone, and coolant chemicals, which is essential for maintaining HVAC system integrity. The hose does not include a heat shield or protective sleeve, reflecting its intended use in protected engine compartments. Its black color matches OEM specifications, ensuring a seamless replacement part for Ford Escape and Mazda Tribute models.

The Dayco Small I.D. Heater Hose product line focuses on providing precise fitment and material quality for smaller diameter heater hoses used in automotive HVAC systems. This line is engineered to meet or exceed SAE specifications, ensuring compatibility and durability in demanding environments.

Applications and Common Issues Addressed

• Replacement of worn or cracked heater hoses in Ford Escape and Mazda Tribute HVAC systems
• Prevention of coolant leaks that can cause engine overheating
• Restoration of proper heater core function for consistent cabin heating
• Elimination of hose swelling or softening due to chemical degradation
• Addressing hose failures caused by aging or exposure to heat

Installation Notes and Tips

• Verify hose diameters (5/8 inch and 3/4 inch) match vehicle specifications before installation
• Ensure all clamps are securely tightened to prevent leaks
• Inspect surrounding components for wear or damage during replacement
• Flush the cooling system if contamination or debris is present
• Use proper tools to avoid damaging hose ends during installation

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87999 to meet SAE J20R3 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 chemical exposure. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to maintain reliability in automotive applications.