Dayco 71805 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71805

The Dayco Curved Radiator Hose 71805 is designed specifically for select Volvo models, including the 850, C70, S60, S70, and V70. Engineered with durable EPDM material, this dual inside diameter hose ensures reliable coolant flow and heat resistance for your vehicle's cooling system.

• Constructed from EPDM for heat and chemical resistance
• Dual inside diameters: 1 7/32 inches and 1 11/32 inches
• Black color for standard OEM appearance
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 12 inches for precise fitment
• Designed without heat shield or protective sleeve

Detailed Product Description

The Dayco Curved Radiator Hose 71805 is a radiator coolant hose tailored for Volvo vehicles such as the 850, C70, S60, S70, and V70. Made from EPDM (ethylene propylene diene monomer), this hose offers excellent resistance to heat, ozone, and coolant chemicals, which helps maintain system integrity under demanding conditions. The hose features a dual inside diameter design, with one end measuring 1 7/32 inches and the other 1 11/32 inches, allowing for a secure and precise connection to the radiator and engine components. Its black color matches OEM standards, ensuring a consistent look within the engine bay.

The hose meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for coolant applications and compliance with industry requirements. With a trunk height of 12 inches, it fits the specified Volvo models without modification. This hose does not include a heat shield or protective sleeve, so installation should consider the surrounding engine environment.

About the Curved Radiator Hose Product Line

Dayco's Curved Radiator Hose line focuses on providing hoses with precise bends and dual inside diameters to accommodate specific vehicle cooling system layouts. This product line is engineered to meet strict SAE specifications, ensuring compatibility and durability for applications like the Volvo 850, C70, S60, S70, and V70. The 71805 part exemplifies this approach by combining material quality and dimensional accuracy for effective coolant transfer.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Volvo 850, C70, S60, S70, and V70
• Prevention of coolant leaks caused by hose degradation
• Restoration of proper coolant flow to avoid engine overheating
• Addressing hose swelling or softening due to heat exposure
• Resolving fitment issues with incorrect or generic hoses

Installation Notes and Tips

• Ensure the hose ends match the specified inside diameters (1 7/32 and 1 11/32 inches) for proper sealing
• Inspect surrounding components for heat sources since this hose lacks a heat shield
• Use appropriate clamps to secure the hose and prevent leaks
• Verify compatibility with your Volvo model before installation
• Replace coolant and bleed the system after hose installation to avoid air pockets

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71805 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring material and performance reliability. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by manufacturer support for defects in material and workmanship.