Dayco 87901 HVAC Heater Hose - Heater To Engine, Heater To Engine (Lower) or Lower

Reliable HVAC Heater Hose for Buick, Chevrolet, and Pontiac Models

The Dayco Small I.D. Heater Hose 87901 is engineered to meet the specific HVAC needs of select Buick, Chevrolet, and Pontiac vehicles. Designed with durable EPDM material and precise 5/8 inch inside diameters, this hose ensures consistent heater core performance in models like the Buick LaCrosse and Chevrolet Impala.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black single inside diameter hose with 5/8 inch ends for secure fitment
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Buick Allure, Chevrolet Monte Carlo, Pontiac Grand Prix, and more
• Trunk height dimension of 19 inches for proper routing

About the Dayco 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 systems requiring precise fit and reliable performance. This product line emphasizes compliance with SAE standards, ensuring hoses like the 87901 maintain durability and compatibility across multiple vehicle models. The absence of heat shields or protective sleeves in this line reflects its application in standard heater core connections where such features are not necessary.

Detailed Product Description

The Dayco 87901 heater hose is a single inside diameter hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids. Both ends of the hose have a 5/8 inch inside diameter, providing a consistent and secure connection to the HVAC system components. The hose is black in color and measures 19 inches in trunk height, suitable for routing in the engine bay of compatible vehicles. It complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, which specify requirements for coolant and heater hoses in automotive applications.

Common Applications and Issues Addressed

• Replacement of worn or cracked heater hoses in Buick Allure and Chevrolet Impala HVAC systems
• Resolving coolant leaks caused by deteriorated heater hoses in Pontiac Grand Prix
• Maintaining proper heater core function in Chevrolet Monte Carlo and Buick LaCrosse
• Preventing overheating issues related to compromised heater hose integrity
• Ensuring reliable coolant flow within the HVAC system for consistent cabin heating

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 87901, ensure the hose is routed without kinks or sharp bends to maintain coolant flow. Verify that the 5/8 inch inside diameter matches the vehicle’s heater core and fitting connections. It is recommended to inspect clamps and replace them if necessary to secure the hose properly. Avoid using hoses with heat shields or protective sleeves if the original hose did not include these features, as this product does not contain them.

Quality Assurance and Warranty

Dayco manufactures the 87901 heater hose to meet stringent SAE specifications, ensuring durability and performance in HVAC applications. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and reliability. Users should consult vehicle service manuals and Dayco documentation for further warranty information.