Dayco 72420 Radiator Coolant Hose - Upper or Upper - Pipe To Radiator

Overview of Dayco Curved Radiator Hose 72420

The Dayco Curved Radiator Hose 72420 is designed for reliable coolant flow in select Audi and Volkswagen vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a precise fit and consistent performance for models like the Audi A4, A4 Quattro, and Volkswagen Passat.

• Constructed from high-quality EPDM for heat and chemical resistance
• Dual inside diameters: 1 1/16 inch and 1 7/32 inch for secure connections
• Black color with no heat shield or protective sleeve
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Designed specifically for Audi A4, A4 Quattro, and Volkswagen Passat coolant systems

Detailed Product Description

The Dayco Curved Radiator Hose 72420 is part of the Curved Radiator Hose product line, which focuses on delivering precise fitment and durability for radiator coolant systems. This hose features a dual inside diameter design, with one end measuring 1 1/16 inches and the other 1 7/32 inches, allowing it to connect seamlessly between different radiator components. Made from EPDM material, it offers resistance to heat, ozone, and coolant chemicals, ensuring long service life under typical engine operating conditions. The hose’s black finish is standard for radiator hoses, and it does not include additional heat shields or protective sleeves, which is suitable for applications where such features are not required.

Compatible Vehicles and Applications

• Compatible with Audi A4 and A4 Quattro models requiring a curved radiator coolant hose
• Fits Volkswagen Passat models with matching radiator hose specifications
• Ideal replacement for radiator coolant hose failures such as leaks, cracks, or swelling
• Used in cooling system repairs to maintain proper engine temperature regulation

Installation Notes and Tips

• Ensure the hose ends match the specified inside diameters (1 1/16 inch and 1 7/32 inch) for proper fit
• Inspect radiator and engine connections for corrosion or damage before installation
• Use appropriate clamps to secure the hose and prevent coolant leaks
• Replace any worn or damaged clamps during installation for optimal sealing
• Verify coolant levels and system pressure after installation to confirm proper operation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72420 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for radiator coolant hoses. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to maintain reliability and performance in automotive cooling systems.