Dayco 87764 HVAC Heater Hose - Heater Outlet

Overview of Dayco Small I.D. Heater Hose 87764

The Dayco Small I.D. Heater Hose 87764 is designed specifically for HVAC systems in select Oldsmobile and Pontiac vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures reliable performance in heating applications for models like the Montana, Silhouette, and Trans Sport.

• Constructed from high-quality EPDM for heat and ozone resistance
• Dual inside diameters: 19/32 inch and 5/8 inch for precise fitment
• Complies with SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Black color for standard OEM appearance
• Trunk height of 9 1/2 inches for proper routing
• Designed without heat shield or protective sleeve

Detailed Product Description

The Dayco Small I.D. Heater Hose 87764 is a dual inside diameter hose constructed from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and weathering. This hose features two different inside diameters—19/32 inch on one end and 5/8 inch on the other—allowing it to connect seamlessly within the HVAC system of compatible vehicles. The hose meets SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring it adheres to industry requirements for heater hoses. Its black color matches OEM specifications, and the 9 1/2 inch trunk height supports proper installation and routing without interference.

Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on providing precise fitment and reliable performance for HVAC systems requiring dual inside diameter hoses. This product line is engineered to meet strict SAE specifications, ensuring compatibility and durability in heating applications. The 87764 part is a representative component of this line, tailored for specific Oldsmobile and Pontiac models.

Applications and Common Issues Addressed

• Replacement of worn or cracked heater hoses in Oldsmobile Montana HVAC systems
• Resolving coolant leaks in Pontiac Silhouette heating circuits
• Restoring proper coolant flow in Pontiac Trans Sport heater assemblies
• Preventing overheating caused by deteriorated heater hoses
• Maintaining HVAC system efficiency by ensuring secure hose connections

Installation Notes and Tips

• Verify hose diameters match the vehicle’s heater core and engine fittings before installation
• Ensure clamps are properly tightened to prevent leaks without damaging the hose
• Inspect surrounding components for wear or damage during replacement
• Route the hose to avoid contact with sharp edges or moving parts
• Flush the cooling system if necessary to remove debris before installing the new hose

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87764 to meet SAE standards, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by the brand’s commitment to reliable automotive components.