Dayco 71551 Radiator Coolant Hose - Upper

Durable Radiator Coolant Hose for Chevrolet and GMC Vehicles

The Dayco Curved Radiator Hose 71551 is engineered to provide reliable coolant flow for select Chevrolet and GMC vans and trucks. Designed with precision, this radiator coolant hose ensures proper fitment and performance for models including the Chevrolet G20, G30, P20, P30, P2500, and P3500.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black color with a curved design for optimal routing
• Uniform inside diameter of 1 3/4 inches on both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Single inside diameter hose type without heat shield or protective sleeve
• Trunk height dimension of 25 for precise fitment

About the Dayco Curved Radiator Hose Product Line

The Curved Radiator Hose line by Dayco focuses on delivering hoses with specific bends and dimensions to match OEM routing requirements. This product line is designed to maintain coolant system integrity while accommodating the spatial constraints of engine compartments. The 71551 part number represents a single inside diameter hose crafted to meet stringent SAE standards, ensuring compatibility and durability for Chevrolet and GMC vehicles.

Technical Details and Specifications

This radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, which helps extend hose life under demanding conditions. Both ends of the hose have an inside diameter of 1 3/4 inches, making it suitable for consistent coolant flow without restriction. The hose does not include a heat shield or protective sleeve, which is typical for applications where additional protection is not required. Compliance with SAE J20R4 Class D-1 and SAE J1684 Type EC standards confirms the hose meets industry requirements for coolant hoses in automotive applications.

Compatible Vehicles and Common Applications

• Chevrolet G20 and G30 full-size vans
• Chevrolet P20 and P30 chassis cab trucks
• Chevrolet P2500 and P3500 heavy-duty trucks
• GMC G20 and G30 vans
• GMC P20, P30, P2500, and P3500 trucks

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to prevent burns. Verify that the hose routing matches the original to avoid kinks or interference with other components. Use appropriate clamps to secure the hose ends firmly, and inspect for leaks after installation. The 71551 hose’s curved design facilitates proper alignment with radiator and engine fittings on compatible Chevrolet and GMC models.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71551 to meet established SAE standards, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by the brand’s commitment to durability and reliability in automotive cooling systems.