Dayco 72878 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 72878

The Dayco Curved Radiator Hose 72878 is designed specifically for Toyota Highlander models, providing reliable coolant flow and engine temperature regulation. Constructed from durable EPDM material, this black radiator coolant hose ensures consistent performance under various operating conditions.

• Material: EPDM for heat and chemical resistance
• Color: Black
• End 1 and End 2 Inside Diameter: 1 5/16 inches
• End 1 and End 2 Outside Diameter: 1 21/32 inches
• Hose Type: Single inside diameter hose
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk Height: 16 1/2 inches
• Compatible with Toyota Highlander

Dayco Curved Radiator Hose Product Line Details

The Curved Radiator Hose line by Dayco focuses on delivering hoses with precise bends and dimensions to fit specific vehicle cooling systems. This product line is engineered to maintain coolant flow efficiency while accommodating the spatial constraints of engine compartments. The 72878 part number is part of this line, ensuring a tailored fit for the Toyota Highlander’s radiator connections.

Product Description and Specifications

This radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, which helps extend the hose’s service life. Both ends of the hose have an inside diameter of 1 5/16 inches and an outside diameter of 1 21/32 inches, designed to match the radiator and engine fittings precisely. The hose is a single inside diameter type, without additional heat shields or protective sleeves, suitable for standard cooling system applications. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses.

Applications and Common Issues Addressed

• Replacement of worn or cracked radiator coolant hoses on Toyota Highlander
• Prevention of coolant leaks due to hose degradation
• Maintaining proper engine temperature by ensuring coolant flow
• Addressing hose swelling or softening caused by heat exposure
• Resolving fitment issues with non-standard or generic hoses

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Verify that the hose diameters match the radiator and engine fittings for a secure connection. Use appropriate clamps to secure the hose ends and check for leaks after installation. The absence of a heat shield or protective sleeve means extra caution should be taken to avoid contact with sharp edges or hot components during installation.

Quality Assurance

Dayco’s Curved Radiator Hose 72878 is manufactured to meet SAE specifications, providing assurance of material quality and dimensional accuracy. While no specific warranty information is provided, Dayco products typically adhere to strict quality control standards to ensure durability and performance in automotive cooling systems.