Dayco 71723 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71723

The Dayco Curved Radiator Hose 71723 is designed to provide reliable coolant flow for select Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and consistent performance in cooling systems.

• Constructed from EPDM for heat and chemical resistance
• Dual inside diameters: 1 17/32 inches and 1 25/32 inches
• Black color for standard OEM appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 11 inches for precise fitment
• Does not include heat shield or protective sleeve

Dayco Curved Radiator Hose Product Line Details

The Curved Radiator Hose line by Dayco focuses on delivering hoses with specific bends and dual inside diameters to accommodate complex radiator connections. This product line is engineered to meet stringent SAE standards, ensuring compatibility and durability in cooling systems. The 71723 part exemplifies this with its tailored dimensions and material choice, suitable for various GM and Isuzu models.

Detailed Product Description

This radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in automotive cooling systems. The dual inside diameter design (1 17/32 inches on one end and 1 25/32 inches on the other) allows for a secure connection between different radiator or engine components. The hose’s black color matches OEM specifications, maintaining the vehicle’s original appearance. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, which define performance requirements for coolant hoses, ensuring it meets industry benchmarks for durability and safety.

Compatible Vehicles and Applications

• Chevrolet Blazer
• GMC Jimmy
• Isuzu Hombre
• Oldsmobile Bravada
• Chevrolet S10 and GMC Sonoma

This hose is designed specifically for these models, providing a direct replacement for worn or damaged radiator coolant hoses.

Common Issues Addressed by Dayco Radiator Hose 71723

• Coolant leaks due to cracked or brittle hoses
• Overheating caused by restricted coolant flow
• Swelling or softening of old hoses under heat stress
• Improper fitment from incorrect hose diameters
• Premature hose failure from substandard materials

Installation Notes and Tips

Before installation, ensure the engine is cool and the cooling system is depressurized. Verify hose diameters and length match the original part. Use appropriate clamps to secure the hose ends firmly without over-tightening, which can damage the hose. Inspect adjacent components for wear or damage during replacement. Proper installation will help maintain optimal coolant flow and prevent leaks.

Quality Assurance and Warranty

Dayco manufactures this radiator hose to meet SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Refer to Dayco’s official documentation for exact warranty terms.