Dayco 88443 HVAC Heater Hose - Tee To Intake Manifold

Overview of Dayco Small I.D. Heater Hose 88443

The Dayco Small I.D. Heater Hose 88443 is designed specifically for Cadillac DeVille, Eldorado, and Seville models. This HVAC heater hose ensures reliable coolant flow within the heating system, maintaining optimal cabin temperature and system performance.

• Constructed from durable EPDM material for heat and chemical resistance
• Dual inside diameter hose with 3/4 inch and 1 inch ends for versatile fitment
• Complies with SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Black color for standard OEM appearance
• Trunk height dimension of 8 inches for precise installation

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

The Small I.D. Heater Hose line by Dayco focuses on providing hoses with dual inside diameters to accommodate specific HVAC system requirements. This product line is engineered to meet stringent SAE standards, ensuring compatibility and durability in heating applications. The 88443 part exemplifies this line by offering a dual I.D. hose that fits select Cadillac models, supporting efficient coolant transfer without the need for additional adapters.

Product Description and Specifications

The Dayco 88443 heater hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids. The hose features two different inside diameters—3/4 inch on one end and 1 inch on the other—allowing it to connect components with varying sizes within the HVAC system. It does not include a heat shield or protective sleeve, which is typical for this hose type. The black color matches OEM standards, and the hose meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications, confirming its suitability for automotive heating systems. The trunk height of 8 inches ensures proper routing and fitment in the engine bay of compatible Cadillac vehicles.

Compatible Vehicles and Common Applications

• Replacement heater hose for Cadillac DeVille models requiring dual I.D. hose connections
• Suitable for Cadillac Eldorado HVAC systems needing a 3/4 inch to 1 inch hose
• Fits Cadillac Seville vehicles with specific heater hose size requirements
• Addresses issues such as heater core leaks, cracked or hardened hoses, and coolant flow restrictions
• Used in HVAC systems to maintain proper heating function and prevent coolant loss

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 88443, ensure the correct orientation of the dual inside diameters to match the vehicle’s heater core and coolant outlet sizes. Inspect surrounding components for wear or damage before installation. Use proper clamps to secure the hose ends and prevent leaks. Avoid twisting or kinking the hose during installation to maintain coolant flow integrity.

Quality Assurance and Warranty

Dayco manufactures the 88443 heater hose to meet SAE standards, ensuring consistent quality and performance. The EPDM material provides durability against heat and chemical exposure common 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 reliability.