Dayco 72301 Radiator Coolant Hose - Lower or Upper

Overview of Dayco Curved Radiator Hose 72301

The Dayco Curved Radiator Hose 72301 is designed specifically for Lexus and Toyota vehicles, including the 4Runner and GX470 models. This radiator coolant hose ensures reliable coolant flow and engine temperature regulation with its durable EPDM construction and precise fitment.

• Constructed from durable EPDM material for heat and chemical resistance
• Black single inside diameter hose with 1 15/32 inch ends
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 14 inches for proper routing and fit
• Compatible with Lexus 4Runner and Toyota GX470 cooling systems

Detailed Product Description

The Dayco Curved Radiator Hose 72301 is engineered to meet the demanding requirements of radiator coolant systems in select Lexus and Toyota vehicles. Made from EPDM (ethylene propylene diene monomer) rubber, this hose offers excellent resistance to heat, ozone, and coolant chemicals, ensuring long service life. Both ends of the hose have an inside diameter of 1 15/32 inches, providing a consistent and secure connection to the radiator and engine fittings. The hose is a single inside diameter type, designed for straightforward installation without the need for adapters or modifications.

This hose meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards, which define performance criteria for coolant hoses, including pressure, temperature, and durability. The 14-inch trunk height allows for proper routing within the engine bay, maintaining clearance and preventing kinks or interference with other components.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with precise bends and dimensions tailored to specific vehicle applications. This ensures optimal coolant flow and fitment without the need for custom modifications. The 72301 part is part of this line, designed to match the curvature and length requirements of Lexus 4Runner and Toyota GX470 radiator systems.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses
• Prevention of coolant leaks due to hose degradation
• Restoration of proper coolant flow to avoid engine overheating
• Elimination of hose collapse or kinking in tight engine compartments
• Upgrading OEM hoses with SAE-compliant, durable EPDM material

Installation Notes and Tips

• Ensure engine is cool before removing the old radiator hose
• Check hose connections and clamps for corrosion or damage
• Use proper clamps to secure the hose ends firmly
• Verify the hose routing matches OEM specifications to avoid interference
• Inspect the cooling system for leaks after installation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72301 to meet strict SAE standards, ensuring reliable performance under normal operating conditions. The EPDM material and construction provide resistance to heat and coolant chemicals, contributing to durability. Warranty details should be confirmed with the original equipment provider or distributor, as they may vary by region and application.