Dayco 71406 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71406

The Dayco Curved Radiator Hose 71406 is designed for reliable coolant flow in Toyota vehicles including the 4Runner, Pickup, and Starlet models. Constructed from durable EPDM material, this radiator coolant hose ensures consistent performance under typical engine operating conditions.

• Made from EPDM material for heat and chemical resistance
• Black color with a curved design for precise fitment
• Inside diameter of 1 5/16 inches on both ends
• Single inside diameter hose type for straightforward installation
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 12 1/2 inches for proper routing

Detailed Product Description

The Dayco Curved Radiator Hose 71406 is engineered to meet the cooling system requirements of select Toyota models such as the 4Runner, Pickup, and Starlet. This hose is manufactured from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, which helps maintain hose integrity over time. Both ends of the hose have an inside diameter of 1 5/16 inches, ensuring a secure connection to radiator and engine fittings. The hose does not include a heat shield or protective sleeve, reflecting its design for standard engine bay environments. Compliance with SAE J20R4 Class D-1 and SAE J1684 Type EC standards confirms its suitability for automotive coolant applications.

About the Curved Radiator Hose Product Line

The Curved Radiator Hose line from Dayco focuses on providing hoses with precise bends and dimensions to match specific vehicle cooling system layouts. This product line is intended to simplify installation and improve coolant flow by reducing the need for additional fittings or modifications. The 71406 part number is a representative example designed for Toyota vehicles requiring a curved hose with a 1 5/16 inch inside diameter on both ends.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Toyota 4Runner, Pickup, and Starlet
• Resolving coolant leaks caused by hose degradation
• Preventing overheating due to compromised coolant flow
• Maintaining proper coolant system pressure and circulation
• Ensuring compatibility with factory radiator and engine connections

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71406, ensure the hose is routed without kinks or sharp bends beyond its designed curve. Verify that the inside diameter matches the radiator and engine fittings to prevent leaks. Use appropriate clamps tightened to manufacturer specifications. Inspect the cooling system for any additional wear or damage during installation to maintain overall system integrity.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71406 to meet SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed quality assurance. Users should consult the product packaging or Dayco’s official resources for warranty information.