Dayco 88391 HVAC Heater Hose - Heater Inlet, Heater To Tee or Pipe to Engine (Outlet)

Overview of Dayco Small I.D. Heater Hose 88391

The Dayco Small I.D. Heater Hose 88391 is designed for reliable HVAC system performance in select Acura, Buick, Honda, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this hose ensures consistent heat transfer and resistance to automotive fluids.

• Constructed from EPDM for heat and chemical resistance
• Black single inside diameter hose with 3/4 inch ends
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with multiple models including Acura MDX, Honda Pilot, Buick LeSabre, Pontiac Bonneville, and Oldsmobile 88/98
• Part number 88391 for precise identification and fitment

Dayco Small I.D. Heater Hose Product Line Details

The Small I.D. Heater Hose line by Dayco focuses on single inside diameter hoses designed for HVAC applications requiring reliable heat transfer and fluid resistance. This product line adheres to strict SAE specifications, ensuring compatibility and durability in various automotive heating systems. The 88391 hose exemplifies this line’s commitment to quality materials and precise fitment.

Product Specifications and Features

This HVAC heater hose features a 3/4 inch inside diameter on both ends, making it suitable for specific OEM configurations. The EPDM construction provides excellent resistance to heat, ozone, and automotive fluids, which is critical for maintaining HVAC system integrity. The hose is black in color and does not include a heat shield or protective sleeve, reflecting its design for standard heating system environments. With a trunk height of 13, it fits securely within the designated engine bay space.

Compatible Vehicles and Applications

• Acura MDX HVAC heater hose replacement
• Buick LeSabre and Park Avenue heating system repair
• Honda Pilot HVAC hose maintenance
• Oldsmobile 88 and 98 heater hose replacement
• Pontiac Bonneville and LSS heating system service

Installation Notes and Tips

• Ensure the hose ends match the 3/4 inch inside diameter fittings on your vehicle
• Inspect surrounding components for wear before installation
• Use proper clamps to secure the hose and prevent leaks
• Verify hose routing to avoid contact with moving parts or excessive heat sources
• Consult vehicle service manual for specific HVAC system procedures

Quality Assurance and Warranty

Dayco’s Small I.D. Heater Hose 88391 is manufactured to meet SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for HVAC hoses. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to maintain reliability and performance in automotive heating systems.