Dayco 87700 HVAC Heater Hose - Heater To Pipe

Overview of Dayco Small I.D. Heater Hose 87700

The Dayco Small I.D. Heater Hose 87700 is designed specifically for HVAC systems in Isuzu Trooper vehicles. Constructed from durable EPDM material, this black single inside diameter hose ensures reliable performance in heating applications.

• Material: EPDM for heat and chemical resistance
• Color: Black
• Inside Diameter: 5/8 inch on both ends
• Hose Type: Single I.D. hose
• SAE Specifications: SAE J20R3 Class D-1 and SAE J1684 Type EC compliant
• Trunk Height: 12 inches
• Compatible with Isuzu Trooper HVAC systems

Details on the Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on providing precise fitment and reliable HVAC hose solutions for specific vehicle applications. This product line emphasizes hoses with smaller inside diameters, suitable for efficient coolant flow in heating systems. The 87700 part number is part of this line, engineered to meet SAE standards for durability and performance in automotive heating circuits.

Product Description and Specifications

The Dayco 87700 heater hose is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. Both ends of the hose have a 5/8 inch inside diameter, making it a single I.D. hose designed to fit tightly within the HVAC system of the Isuzu Trooper. It does not include a heat shield or protective sleeve, which is typical for this hose type. The hose meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications, ensuring it adheres to industry standards for heater hoses. With a trunk height of 12 inches, it is sized to fit the routing requirements of the Trooper’s heating system.

Common Applications and Issues Addressed

• Replacement of worn or cracked heater hoses in Isuzu Trooper HVAC systems
• Prevention of coolant leaks that can cause heating inefficiency
• Restoration of proper coolant flow to the heater core
• Elimination of hose swelling or softening due to heat exposure
• Ensuring compliance with SAE standards for safe operation

Installation Notes and Tips

When installing the Dayco 87700 heater hose, ensure the vehicle is cool and the cooling system is depressurized. Verify the 5/8 inch inside diameter matches the existing hose connections on the Isuzu Trooper. Inspect hose clamps and replace if necessary to maintain a secure seal. Avoid twisting or kinking the hose during installation to preserve flow integrity. Since this hose does not include a heat shield or protective sleeve, route it away from high-heat components to prevent premature wear.

Quality Assurance and Warranty

Dayco manufactures the 87700 heater hose to meet SAE specifications, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically undergo rigorous testing to comply with automotive standards. This hose is engineered to provide reliable service within the HVAC system of the Isuzu Trooper when installed and maintained properly.