Dayco 87744 HVAC Heater Hose - Engine To Heater, Heater Hose or Heater To Pipe-1

Overview of Dayco Small I.D. Heater Hose 87744

The Dayco Small I.D. Heater Hose 87744 is designed for reliable HVAC system performance in select Buick, Chevrolet, Ford, Mercury, Pontiac, and Saturn vehicles. This hose provides a durable and precise fit for models such as the Contour, Montana, Mystique, Relay, Terraza, and Uplander.

• Constructed from EPDM material for heat and ozone resistance
• Black color with a protective sleeve for added durability
• Single inside diameter hose with 19/32 inch ends on both sides
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Trunk height dimension of 21 inches

Detailed Product Description

The Dayco Small I.D. Heater Hose 87744 is engineered from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and weathering, making it suitable for HVAC heater applications. This hose features a consistent 19/32 inch inside diameter on both ends, ensuring a secure and leak-resistant connection within the heating system. The black hose includes a protective sleeve to guard against abrasion and environmental damage, although it does not contain a heat shield. Designed as a 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. The hose length corresponds to a trunk height of 21 inches, fitting the specified vehicle models accurately.

About the Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on delivering precise diameter hoses tailored for HVAC systems requiring smaller inside diameters. This product line emphasizes material quality and compliance with SAE specifications to ensure compatibility and durability in various automotive heating applications. The 87744 part is a representative example, combining EPDM construction with protective features to meet the demands of multiple vehicle makes and models.

Applications and Common Issues Addressed

• Replacement of worn or cracked heater hoses in Buick Contour and Chevrolet Montana
• Resolving coolant leaks in Ford Mystique and Mercury Relay heating systems
• Maintaining proper heater core flow in Pontiac Terraza and Saturn Uplander
• Preventing hose degradation due to heat and ozone exposure
• Ensuring HVAC system efficiency by restoring proper hose integrity

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 87744, verify the hose length and inside diameter match the vehicle’s specifications. Ensure all connections are clean and free of debris before fitting the hose. The protective sleeve should be positioned to minimize abrasion points. Avoid twisting the hose during installation to maintain proper flow and prevent premature wear.

Quality Assurance

Dayco manufactures the Small I.D. Heater Hose 87744 to meet stringent SAE standards, ensuring reliable performance in automotive HVAC systems. The EPDM material and protective sleeve contribute to the hose’s durability and resistance to environmental factors. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls for automotive replacement parts.