Dayco 72766 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 72766

The Dayco Curved Radiator Hose 72766 is engineered for reliable coolant flow in select Mercedes-Benz models. Designed with durable EPDM material, this branched radiator coolant hose ensures consistent performance in demanding engine environments.

• Constructed from high-quality EPDM for heat and chemical resistance
• Branched hose design with three connection points
• Compatible with Mercedes-Benz C300, C350, E350, and GLK350 models
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color with precise inside and outside diameters for secure fitment

Detailed Product Description

The Dayco Curved Radiator Hose 72766 is part of the Curved Radiator Hose product line, which focuses on delivering hoses with specific bends and branches to accommodate complex cooling system layouts. This hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in automotive cooling systems.

This particular hose features a branched design with three ends: two ends with an inside diameter of 1 5/32 inches and one smaller branch with a 5/16 inch inside diameter. The outside diameters are 1 25/32 inches for the larger ends and 19/32 inches for the smaller branch, ensuring a precise and secure connection to the radiator and engine components. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator coolant hose.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with the following Mercedes-Benz models:

• Mercedes-Benz C300
• Mercedes-Benz C350
• Mercedes-Benz E350
• Mercedes-Benz GLK350

It is designed to replace original equipment hoses that require a branched configuration and specific diameter measurements, ensuring proper coolant flow and system integrity.

Common Issues Addressed by Dayco Radiator Hose 72766

• Coolant leaks caused by cracked or worn radiator hoses
• Overheating due to restricted or collapsed hoses
• Improper fitment from generic or incorrect hose replacements
• Degradation from exposure to heat and engine chemicals
• Maintaining coolant system pressure and flow consistency

Installation Notes and Tips

• Verify hose diameters and branch locations match your vehicle’s cooling system
• Inspect clamps and connections for wear and replace if necessary
• Drain coolant before removing the old hose to prevent spills
• Ensure hose is routed without kinks or sharp bends to maintain flow
• Check for leaks after installation and during initial engine operation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72766 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to deliver reliable performance in automotive cooling systems.