Dayco 87785 HVAC Heater Hose - Heater Outlet or Heater To Engine

Overview of Dayco Small I.D. Heater Hose 87785

The Dayco Small I.D. Heater Hose 87785 is designed for reliable HVAC system performance in select Buick and Pontiac vehicles. Engineered with durable EPDM material, this hose ensures consistent heat transfer and resistance to automotive fluids.

• Constructed from EPDM for heat and chemical resistance
• Black single inside diameter hose with 5/8 inch ends
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Buick Bonneville, LeSabre, Park Avenue, and Pontiac Riviera
• Trunk height dimension of 17 inches for precise fitment

Detailed Product Description

The Dayco Small I.D. Heater Hose 87785 is part of the Small I.D. Heater Hose product line, which focuses on providing high-quality heater hoses with smaller inside diameters for specific HVAC applications. This hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids, making it suitable for heater core connections in HVAC systems. Both ends of the hose have a 5/8 inch inside diameter, ensuring a secure and leak-resistant fit. 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 J20R3 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive heating and cooling systems.

Compatible Vehicles and Applications

This heater hose is compatible with several Buick and Pontiac models, including the Buick Bonneville, LeSabre, Park Avenue, and the Pontiac Riviera. It is designed to replace original equipment heater hoses in these vehicles, ensuring proper HVAC system function and heat transfer.

• Replaces worn or cracked heater hoses in HVAC systems
• Prevents coolant leaks that can cause engine overheating
• Restores proper heater core flow for effective cabin heating
• Eliminates hose swelling or softening due to age or chemical exposure
• Maintains system pressure and prevents vacuum leaks

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 87785, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose length and inside diameter match the original hose to avoid fitment issues. Use appropriate clamps to secure both 5/8 inch ends firmly to prevent leaks. Inspect adjacent components for wear or damage during installation to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Dayco manufactures this heater hose to meet strict SAE specifications, ensuring durability and performance in automotive HVAC applications. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and reliability. Users should consult product packaging or Dayco documentation for warranty information.