Dayco 71658 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71658

The Dayco Curved Radiator Hose 71658 is designed to provide reliable coolant flow for select Chevrolet, GMC, and Oldsmobile vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black color with a curved design for precise fitment
• Inside diameter of 1 9/32 inches on both ends for uniform coolant flow
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 17 1/2 inches for proper routing in engine bay
• Single inside diameter hose type for consistent coolant transfer

Detailed Product Description

The Dayco Curved Radiator Hose line focuses on delivering hoses that match exact OEM specifications for coolant systems. The 71658 part number is a single inside diameter hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. This hose features a consistent 1 9/32 inch inside diameter on both ends, ensuring a secure and leak-free connection. Its curved shape and 17 1/2 inch trunk height allow it to fit precisely within the cooling system of compatible vehicles without kinking or restricting flow.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with various Chevrolet, GMC, and Oldsmobile models, including:

• Chevrolet Bravada
• GMC Jimmy
• Chevrolet S10 Blazer
• GMC Sonoma

It is designed to maintain proper coolant circulation and prevent overheating issues in these vehicles.

Common Issues Addressed by Dayco Radiator Hose 71658

• Coolant leaks caused by cracked or worn hoses
• Overheating due to restricted coolant flow
• Swelling or softening of hoses from heat exposure
• Hose collapse or kinking affecting coolant circulation
• Premature hose failure from chemical degradation

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71658, ensure the engine is cool to avoid burns. Verify the hose routing matches the original configuration to prevent kinks or interference with other engine components. Use proper clamps to secure both ends and check for leaks after installation. This hose does not include a heat shield or protective sleeve, so inspect surrounding components for potential abrasion points.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71658 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 are generally backed by quality controls consistent with OEM replacement parts.