Dayco 71803 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71803

The Dayco Curved Radiator Hose 71803 is designed specifically for Volkswagen Cabrio, Golf, and Jetta models. Engineered to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, this branched radiator coolant hose ensures reliable performance in your vehicle's cooling system.

• Constructed from durable EPDM material for heat and chemical resistance
• Branched hose design with multiple inside diameters: 1 1/4", 5/8", and 1"
• Compatible with Volkswagen Cabrio, Golf, and Jetta models
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• Black color for standard OEM appearance
• Trunk height of 27 1/2 inches for proper fitment

Detailed Product Description

The Dayco Curved Radiator Hose 71803 is a branched radiator coolant hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. This hose features multiple inside diameters—1 1/4 inches on two ends, 5/8 inch on one end, and 1 inch on another—allowing it to connect various points within the cooling system efficiently. Its black color matches OEM specifications, maintaining the original look under the hood. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator hose. With a trunk height of 27 1/2 inches, it is designed to fit precisely in the cooling system layout of Volkswagen Cabrio, Golf, and Jetta vehicles.

The Curved Radiator Hose product line by Dayco focuses on delivering hoses that accommodate complex routing within engine compartments. This branched hose design supports multiple connections, making it suitable for vehicles requiring coolant flow to several components. The 71803 part number is part of this line, ensuring compatibility and performance aligned with Dayco's standards.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Volkswagen Cabrio, Golf, and Jetta
• Resolving coolant leaks caused by hose degradation or damage
• Maintaining proper coolant flow to prevent engine overheating
• Addressing hose swelling or softening due to heat exposure
• Ensuring secure connections in branched coolant systems

Installation Notes and Tips

• Verify compatibility with your specific Volkswagen model and engine before installation
• Inspect all hose connections and clamps for wear and replace if necessary
• Drain coolant system prior to hose removal to avoid spills
• Ensure proper routing of the branched hose to prevent kinks or interference with other components
• After installation, refill and bleed the cooling system to remove air pockets

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71803 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring durability and performance under typical operating conditions. While specific warranty details are not provided, Dayco products generally adhere to industry quality controls and are designed for reliable service life in Volkswagen Cabrio, Golf, and Jetta vehicles.