Dayco 87766 HVAC Heater Hose

Overview of Dayco Small I.D. Heater Hose 87766

The Dayco Small I.D. Heater Hose 87766 is designed for reliable HVAC system performance in select Chevrolet, Ford, Lexus, Mazda, and Mercury vehicles. This black EPDM hose features a consistent 5/8 inch inside diameter on both ends, ensuring proper fit and function in your vehicle's heating system.

• Constructed from durable EPDM material for heat and chemical resistance
• Black color for standard OEM appearance
• 5/8 inch inside diameter on both ends for consistent flow
• Single I.D. hose type for straightforward installation
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 13 inches for precise fitment

Detailed Product Description

The Dayco Small I.D. Heater Hose 87766 is engineered to meet stringent SAE specifications, including SAE J20R3 Class D-1 and SAE J1684 Type EC, which ensures compatibility with automotive HVAC systems requiring high-quality heater hoses. Made from EPDM, this hose offers excellent resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in heating applications. The hose’s uniform 5/8 inch inside diameter on both ends supports consistent coolant flow, which is critical for maintaining proper cabin heating performance.

This hose does not include a heat shield or protective sleeve, which is typical for applications where additional protection is not required. The 13-inch trunk height dimension allows it to fit precisely in the HVAC system of compatible vehicles without excess slack or tension.

About the Small I.D. Heater Hose Product Line

The Dayco Small I.D. Heater Hose product line focuses on providing single inside diameter hoses designed specifically for HVAC heating systems. These hoses are manufactured to meet or exceed SAE standards, ensuring reliable performance and durability. The 87766 part is a representative example, offering a balance of material quality and dimensional accuracy for proper fitment in various vehicle models.

Compatible Vehicles and Common Applications

• Chevrolet Caprice and B4000 models
• Ford Explorer, Explorer Sport, Explorer Sport Trac, Mountaineer, and Ranger
• Lexus LX450
• Mazda MX-5 Miata
• Mercury Mountaineer

This heater hose is suitable for HVAC system repairs or replacements where a 5/8 inch inside diameter hose is specified.

Installation Notes and Tips

• Verify hose length and diameter before installation to ensure proper fit
• Inspect hose connections for corrosion or damage prior to installation
• Use appropriate clamps to secure hose ends and prevent leaks
• Ensure coolant system is depressurized and cooled before removing old hose
• Check for any signs of wear or damage in adjacent components during replacement

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87766 to meet SAE standards, ensuring consistent quality and performance. The EPDM material provides resistance to heat and chemicals commonly found in automotive HVAC systems. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by the brand’s commitment to durability and reliability.