Dayco 71391 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71391

The Dayco Curved Radiator Hose 71391 is designed for reliable coolant flow in Ford and Mazda vehicles, including the Aerostar, B3000, and Ranger models. Constructed from durable EPDM material, this radiator coolant hose ensures consistent performance under typical engine operating conditions.

• Material: EPDM for heat and chemical resistance
• Color: Black
• End 1 Inside Diameter: 1 1/2 inches
• End 2 Inside Diameter: 1 1/2 inches
• Hose Type: Single inside diameter hose
• Trunk Height: 16 3/8 inches
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Ford Aerostar, B3000, and Ranger models

Details on the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses shaped to fit specific radiator and engine configurations, reducing the need for modifications during installation. This product line emphasizes precise fitment and material standards, such as compliance with SAE specifications, to maintain coolant system integrity and durability. The 71391 part is a single inside diameter hose designed to meet these requirements for select Ford and Mazda vehicles.

Product Description and Specifications

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 automotive cooling systems. Both ends of the hose have an inside diameter of 1 1/2 inches, ensuring a consistent fit with corresponding radiator and engine connections. The hose length, measured by trunk height, is 16 3/8 inches, designed to accommodate the specific routing needs of the Ford Aerostar, B3000, and Ranger models. It does not include a heat shield or protective sleeve, which is typical for this hose type and application.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Ford Aerostar, B3000, and Ranger vehicles
• Resolving coolant leaks caused by hose degradation or damage
• Maintaining proper coolant flow to prevent engine overheating
• Ensuring compatibility with factory radiator and engine fittings
• Addressing hose failures due to aging or exposure to engine heat

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71391, ensure the engine is cool to avoid burns or pressure-related injuries. Verify that both hose ends match the 1 1/2 inch inside diameter fittings on the vehicle. Inspect clamps and surrounding components for wear and replace if necessary to ensure a secure seal. Proper routing according to the vehicle’s service manual will prevent kinks or interference with other engine parts.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71391 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. This part undergoes quality control to maintain consistent dimensions and material properties. Warranty details should be confirmed with the point of purchase or manufacturer documentation.