Dayco 87880 HVAC Heater Hose

Overview of Dayco Small I.D. Heater Hose 87880

The Dayco Small I.D. Heater Hose 87880 is designed for reliable HVAC system performance in select Buick, Chevrolet, Kia, Pontiac, and Saturn vehicles. Engineered with durable EPDM material, this hose supports efficient heater core operation in models such as the Caprice, Impala, Optima, and Monte Carlo.

• Constructed from high-quality EPDM for heat and chemical resistance
• Dual inside diameter hose with 5/8 inch and 3/4 inch ends
• Black color for standard OEM appearance
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with multiple GM and Kia models including Buick Lucerne and Chevrolet Lumina

Dayco Small I.D. Heater Hose Product Line Details

The Small I.D. Heater Hose line by Dayco focuses on providing hoses with dual inside diameters to accommodate specific HVAC system requirements. This design ensures a precise fit and reliable sealing for heater core connections. The 87880 part number represents a hose without heat shields or protective sleeves, suitable for applications where these features are not required.

Technical Description and Specifications

This HVAC heater hose features a dual inside diameter design, with one end measuring 5/8 inch and the other 3/4 inch, allowing it to connect different sized fittings within the heating system. The outside diameters are 15/16 inch and 1 1/16 inch respectively. Made from EPDM, the hose offers resistance to heat, ozone, and coolant chemicals, which is critical for maintaining HVAC system integrity. The hose length is 14 inches, providing adequate reach for the specified vehicle models.

Compatible Vehicles and Applications

• Buick Caprice, Lucerne, Roadmaster
• Chevrolet Century, Impala, Lumina, Monte Carlo
• Kia Magentis, Optima
• Pontiac Grand Prix
• Saturn Relay, Terraza, Uplander
• Also compatible with Chevrolet Montana and Buick Terraza

Common HVAC Issues Addressed by This Heater Hose

• Heater core leaks due to worn or cracked hoses
• Reduced heater performance from restricted coolant flow
• Coolant leaks causing engine overheating or HVAC failure
• Hose swelling or degradation from chemical exposure
• Improper hose fit causing connection failures

Installation Notes and Tips

• Ensure the hose ends match the heater core and engine fittings (5/8 inch and 3/4 inch inside diameters)
• Inspect clamps and replace if corroded or damaged
• Verify hose routing to avoid contact with sharp edges or hot engine components
• Flush the cooling system before installation to prevent contamination
• Check for leaks after installation and during initial engine warm-up

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87880 to meet SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for HVAC hoses. The EPDM material provides durability under typical operating conditions. Warranty coverage details should be confirmed with the original equipment manufacturer or supplier.