Dayco 87778 HVAC Heater Hose - Heater Inlet

Overview of Dayco Small I.D. Heater Hose 87778

The Dayco Small I.D. Heater Hose 87778 is designed specifically for Ford Escort and Mercury Tracer models. This branched HVAC heater hose is constructed from durable EPDM material, ensuring reliable performance in your vehicle's heating system.

• Constructed from EPDM for heat and chemical resistance
• Branched hose design with three different inside diameters (19/32", 23/32", 1/4")
• Black color for standard OEM appearance
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Ford Escort and Mercury Tracer HVAC systems
• Does not include heat shield or protective sleeve
• Trunk height dimension of 14 inches

Detailed Product Description

The Dayco Small I.D. Heater Hose 87778 is engineered to meet the specific HVAC hose requirements of Ford Escort and Mercury Tracer vehicles. Made from EPDM (ethylene propylene diene monomer), this hose offers excellent resistance to heat, ozone, and automotive fluids, which is critical for maintaining the integrity of the heating system. The branched hose design features three distinct inside diameters—19/32", 23/32", and 1/4"—allowing it to connect multiple points within the heater core assembly efficiently. The hose is black in color, matching OEM standards, and complies with SAE J20R3 Class D-1 and SAE J1684 Type EC specifications, ensuring it meets industry standards for durability and performance.

About the Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on providing precise fitment and reliable materials for HVAC systems requiring smaller inside diameter hoses. This product line is tailored to meet the demands of specific vehicle models, such as the Ford Escort and Mercury Tracer, offering branched hose configurations that simplify installation and maintain system integrity without the need for additional heat shields or protective sleeves.

Common Applications and Issues Addressed

• Replacement of worn or cracked heater hoses in Ford Escort and Mercury Tracer HVAC systems
• Resolving coolant leaks within the heater core hose assembly
• Preventing overheating caused by compromised heater hose integrity
• Maintaining proper coolant flow for effective cabin heating
• Addressing hose failures due to age-related material degradation

Installation Notes and Tips

• Ensure the vehicle is cool before beginning installation to avoid burns from hot coolant
• Verify hose diameters match the OEM specifications for proper fitment
• Inspect all hose connections and clamps for wear and replace as necessary
• Flush the cooling system if contamination or debris is present before installing the new hose
• Check for leaks after installation by running the engine and monitoring the heater hose assembly

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87778 to meet SAE industry standards, including J20R3 Class D-1 and J1684 Type EC, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to support reliable vehicle operation.