Dayco 87789 HVAC Heater Hose - Heater Outlet, Heater To Auxiliary Heater Pipe-1 or Heater To Pipe

Reliable HVAC Heater Hose for Ford Super Duty and Excursion

The Dayco Small I.D. Heater Hose 87789 is engineered to meet the demanding HVAC needs of Ford Excursion, F-250 Super Duty, and F-350 Super Duty models. Designed with durable EPDM material and a protective sleeve, this hose ensures consistent performance in your vehicle's heating system.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black single inside diameter hose with 5/8 inch ends for precise fit
• Protective sleeve included to enhance durability and prevent abrasion
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Ford Excursion, F-250 Super Duty, and F-350 Super Duty

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

The Small I.D. Heater Hose line by Dayco focuses on providing reliable, single inside diameter hoses designed specifically for HVAC applications. These hoses are manufactured to meet strict SAE standards, ensuring compatibility and durability in heating systems. The 87789 part number is part of this line, offering a balance of flexibility and protection with its EPDM construction and protective sleeve.

Detailed Product Description

The Dayco 87789 heater hose is a single inside diameter hose with both ends measuring 5/8 inch, making it suitable for precise HVAC connections in select Ford trucks and SUVs. Its EPDM material offers resistance to heat, ozone, and various automotive fluids, which is critical for maintaining heater core performance. The hose does not include a heat shield but features a protective sleeve to guard against wear and abrasion during operation. With a trunk height of 12, it fits securely within the vehicle’s HVAC system without compromising space.

Common Applications and Problem Solving

• Replacement of worn or cracked heater hoses in Ford Excursion and Super Duty trucks
• Prevention of coolant leaks that can cause HVAC system failure
• Restoration of proper heater core flow for consistent cabin heating
• Addressing hose degradation due to heat and chemical exposure
• Ensuring compliance with SAE specifications for safety and reliability

Installation Notes and Tips

When installing the Dayco 87789 heater hose, ensure both ends are securely clamped to prevent leaks. Inspect the surrounding HVAC components for wear or damage during replacement. The protective sleeve should be positioned to minimize abrasion from adjacent parts. This hose is designed for direct replacement on compatible Ford Excursion, F-250 Super Duty, and F-350 Super Duty models, so verify fitment before installation.

Quality Assurance and Warranty

Dayco manufactures the 87789 heater hose to meet SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring consistent quality and performance. The EPDM material and protective sleeve contribute to the hose’s durability under typical operating conditions. Warranty details are provided by Dayco and should be confirmed at the time of purchase.