Dayco 87748 HVAC Heater Hose

Reliable HVAC Heater Hose for Acura, Chevrolet, Honda, and Isuzu Vehicles

The Dayco Small I.D. Heater Hose 87748 is engineered to provide dependable performance in your vehicle's heating system. Designed specifically for select Acura, Chevrolet, Honda, and Isuzu models, this hose ensures proper coolant flow and system integrity.

• Constructed from durable EPDM material for heat and chemical resistance
• Dual inside diameter hose with 5/8 inch and 3/4 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 of 7 inches for precise installation

About the Dayco Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on delivering hoses with smaller inside diameters tailored for specific HVAC applications. This product line emphasizes compatibility and durability, meeting industry SAE standards to ensure reliable operation in heating systems. The 87748 part number is part of this line, offering a dual inside diameter design to accommodate varying connection points within the HVAC system.

Product Details and Specifications

The Dayco 87748 heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. This hose features a dual inside diameter design, with one end measuring 5/8 inch and the other 3/4 inch, allowing it to fit different HVAC system connections without modification. It does not include a heat shield or protective sleeve, which is typical for this hose type. The hose meets SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring it meets automotive industry requirements for heater hoses. Its black color matches OEM specifications, and the 7-inch trunk height supports proper routing within the engine bay.

Compatible Vehicles and Common Applications

• Acura models including the SLX and VehiCROSS
• Chevrolet trucks such as C2500, C2500 Suburban, C3500, K2500, K2500 Suburban, and K3500
• Honda Passport
• Isuzu Amigo, Axiom, Rodeo, Rodeo Sport, and Trooper

This heater hose is designed to maintain efficient coolant flow in the HVAC system, helping to prevent common issues such as:

• Coolant leaks causing reduced heating performance
• Hose deterioration from heat and chemical exposure
• Improper hose fit leading to coolant loss
• Cracking or swelling due to aging or incompatible materials
• System overheating caused by restricted coolant flow

Installation Notes and Tips

When installing the Dayco 87748 heater hose, ensure the correct orientation of the dual inside diameter ends to match the vehicle’s HVAC connections. Inspect the hose routing to avoid sharp bends or contact with moving parts. Since this hose does not include a heat shield or protective sleeve, verify that it is positioned away from excessive heat sources or abrasive surfaces. Use appropriate clamps to secure the hose ends and check for leaks after installation.

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87748 to meet stringent SAE specifications, ensuring durability and performance in demanding automotive environments. While specific warranty details are not provided, Dayco products typically adhere to industry quality standards and are backed by the brand’s commitment to reliability.