Dayco 71558 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71558

The Dayco Curved Radiator Hose 71558 is designed for reliable coolant flow in select Chevrolet, GMC, and Pontiac vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and efficient heat resistance for your radiator system.

• Constructed from high-quality EPDM rubber for durability and heat resistance
• Dual inside diameters: 1 1/4 inch and 1 1/2 inch for precise fitment
• Black color for standard OEM appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 24 inches for proper routing
• Designed without heat shield or protective sleeve

Detailed Product Description

The Dayco Curved Radiator Hose 71558 is a dual inside diameter hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. This hose features a 1 1/4 inch inside diameter on one end and a 1 1/2 inch inside diameter on the other, allowing it to connect different radiator components securely. Its black color matches OEM standards, maintaining the original engine bay appearance. The hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses. With a trunk height of 24 inches, it is designed to fit specific radiator layouts without interference.

About the Curved Radiator Hose Product Line

Dayco's Curved Radiator Hose line focuses on providing hoses with precise bends and dual inside diameters to accommodate complex radiator and engine configurations. This product line is engineered to maintain coolant flow efficiency while fitting tightly within the engine compartment. The 71558 part exemplifies this approach by offering a curved design that matches factory specifications for select Chevrolet, GMC, and Pontiac models.

Compatible Vehicles and Applications

• Chevrolet Blazer, C10, C10 Suburban, C20, C20 Suburban, C30
• Chevrolet C1500, C1500 Suburban, C2500, C2500 Suburban, C3500
• GMC Jimmy, K5 Blazer, K10, K10 Suburban, K20, K20 Suburban
• GMC K30, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500
• Pontiac Grand LeMans, Grand Prix

Common Issues Addressed by Dayco Radiator Hose 71558

• Prevents coolant leaks caused by cracked or worn hoses
• Eliminates overheating due to restricted coolant flow
• Replaces hoses with improper fit or diameter mismatch
• Resolves hose swelling or softening from heat exposure
• Restores proper coolant circulation in aging radiator systems

Installation Notes and Tips

• Ensure engine is cool before removing the old radiator hose
• Check hose connections for corrosion or damage before installation
• Use appropriate clamps to secure the hose ends firmly
• Verify the hose routing matches factory specifications to avoid kinks
• Inspect the cooling system for leaks after installation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71558 to meet SAE standards, ensuring consistent quality and performance. The EPDM material provides resistance to heat and coolant chemicals, contributing to long service life. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.