Dayco 88440 HVAC Heater Hose - Heater To Pipe

Overview of Dayco Small I.D. Heater Hose 88440

The Dayco Small I.D. Heater Hose 88440 is designed for reliable HVAC system performance in select Buick and Oldsmobile 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 ID on both ends
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 31 1/2 inches for precise fitment
• Compatible with Buick Century and Oldsmobile Cutlass Ciera and Cutlass Cruiser models

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

The Small I.D. Heater Hose line by Dayco focuses on single inside diameter hoses designed for HVAC applications. These hoses provide a consistent internal diameter to maintain proper coolant flow and heat transfer within the vehicle’s heating system. The 88440 part number is part of this line, offering a reliable replacement hose that meets industry SAE standards for durability and performance.

Product Description and Specifications

This HVAC heater hose features a 3/4 inch inside diameter on both ends, making it suitable for specific Buick and Oldsmobile models requiring this size. The hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids, which helps extend the hose’s service life. The black color and single i.d. hose type provide a straightforward replacement option without additional protective sleeves or heat shields. Compliance with SAE J20R3 Class D-1 and SAE J1684 Type EC standards ensures the hose meets automotive HVAC system requirements.

Applications and Common Issues Addressed

• Replacement of worn or cracked heater hoses in Buick Century models
• Restoring proper coolant flow in Oldsmobile Cutlass Ciera heating systems
• Resolving heater core leaks caused by deteriorated hoses in Cutlass Cruiser vehicles
• Preventing coolant loss and overheating due to hose failure
• Maintaining HVAC system efficiency and cabin heating performance

Installation Notes and Tips

When installing the Dayco 88440 heater hose, ensure the hose is routed correctly to avoid kinks or sharp bends that could restrict coolant flow. Verify that the 3/4 inch inside diameter matches the vehicle’s heater core and engine connections. Use appropriate clamps to secure the hose ends firmly, preventing leaks. Inspect surrounding components for wear or damage during installation to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 88440 to meet SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry standards for durability and reliability in automotive HVAC applications.