Dayco 73128 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 73128

The Dayco Curved Radiator Hose 73128 is designed for reliable coolant flow in select Audi and Volkswagen models. Engineered with durable EPDM material, this branched radiator coolant hose ensures consistent performance and longevity in your vehicle's cooling system.

• Constructed from high-quality EPDM for heat and chemical resistance
• Branched hose design with three different inside diameters: 1 1/4", 1 7/16", and 5/16"
• Protective sleeve included for added durability
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Audi A3 and Volkswagen Beetle, Eos, GTI, and Jetta models

Detailed Product Description

The Dayco Curved Radiator Hose 73128 is a branched radiator coolant hose specifically designed to meet the cooling system requirements of various Audi and Volkswagen vehicles. 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 three distinct inside diameters—1 1/4 inches, 1 7/16 inches, and 5/16 inches—allowing it to connect multiple points within the cooling system efficiently. Its black color and protective sleeve enhance durability by shielding the hose from abrasion and external damage. This hose does not include a heat shield but meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it adheres to industry requirements for coolant hoses.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and branches to fit complex cooling system layouts. This product line is engineered to accommodate precise fitment needs in vehicles like Audi and Volkswagen models, where standard straight hoses may not provide the necessary routing. The 73128 part exemplifies this with its branched design and multiple diameter ends, facilitating proper coolant flow and system integration.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Audi A3 and Volkswagen Beetle, Eos, GTI, and Jetta
• Resolving coolant leaks caused by hose degradation or damage
• Maintaining proper coolant circulation to prevent engine overheating
• Addressing hose failures due to abrasion or chemical exposure
• Upgrading to a hose with protective sleeve for enhanced durability

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Verify the hose routing matches the original configuration, paying attention to the branched connections and diameter sizes. Use appropriate clamps to secure the hose ends firmly without over-tightening, which could damage the hose. Inspect surrounding components for wear or damage during installation to maintain overall cooling system integrity.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 73128 to meet strict SAE specifications, including J20R4 Class D-1 and J1684 Type EC, ensuring reliable performance in automotive cooling systems. The hose includes a protective sleeve for added durability. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and reliability.