Dayco 72346 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 72346

The Dayco Curved Radiator Hose 72346 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models. Engineered with durable EPDM material, this branched radiator coolant hose ensures reliable performance under demanding conditions.

• Constructed from high-quality EPDM for heat and chemical resistance
• Branched hose design with multiple inside diameters for precise fitment
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color for standard OEM appearance
• Compatible with Chevrolet and GMC heavy-duty truck models

Detailed Product Features and Specifications

The Dayco Curved Radiator Hose 72346 features a branched hose design with four different inside diameters: 1 3/4", 2 1/16", 1", and 5/8". This allows it to connect multiple points within the cooling system efficiently. The hose’s outside diameters correspond accordingly to ensure a secure fit. Made from EPDM material, it offers excellent resistance to heat, ozone, and coolant chemicals, which is critical for maintaining system integrity in Chevrolet Sierra and Silverado heavy-duty trucks. The hose does not include a heat shield or protective sleeve, focusing on core durability and fitment. It meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for coolant system applications.

About the Curved Radiator Hose Product Line

Dayco's Curved Radiator Hose line is designed to provide precise fitment and reliable coolant flow for specific vehicle applications. This product line focuses on hoses with complex shapes and branched configurations to accommodate the unique routing requirements of modern cooling systems. The 72346 part exemplifies this with its multiple diameters and branched design, tailored for Chevrolet and GMC heavy-duty trucks.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Chevrolet Sierra 2500 HD and Silverado 3500
• Addressing coolant leaks caused by hose degradation or swelling
• Restoring proper coolant flow in branched hose configurations
• Preventing overheating issues related to compromised radiator hoses
• Maintaining OEM-level cooling system performance in GMC Sierra 3500 trucks

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. Use appropriate clamps to secure each end, matching the specified inside diameters of 1 3/4", 2 1/16", 1", and 5/8". Inspect adjacent components for wear or damage during installation. No heat shield or protective sleeve is included, so take care to avoid contact with sharp edges or excessive heat sources.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72346 to meet stringent SAE specifications, ensuring durability and performance in heavy-duty applications. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and reliability. Using this hose helps maintain the integrity of the cooling system in Chevrolet and GMC heavy-duty trucks.