Dayco 71903 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71903

The Dayco Curved Radiator Hose 71903 is designed specifically for Ford Explorer and Mercury Mountaineer models. Constructed from durable EPDM material, this radiator coolant hose ensures reliable performance in your vehicle's cooling system.

• 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
• SAE Specifications: SAE J20R4 Class D-1, SAE J1684 Type EC
• Trunk Height: 15
• Compatible with Ford Explorer and Mercury Mountaineer

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on delivering hoses that accommodate specific engine bay configurations requiring curved designs. This product line provides hoses engineered to meet SAE standards for coolant hoses, ensuring compatibility and durability. The 71903 part number is part of this line, offering a precise fit and reliable coolant flow for select Ford and Mercury SUVs.

Detailed Product Description

The Dayco 71903 radiator coolant hose is manufactured from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. Both ends of the hose have an inside diameter of 1 1/2 inches, making it a single inside diameter hose suitable for direct replacement. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator hose. It meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, ensuring it adheres to industry standards for coolant hoses. The trunk height of 15 allows for proper routing within the engine compartment of compatible vehicles.

Applications and Common Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Ford Explorer and Mercury Mountaineer
• Prevention of coolant leaks caused by hose degradation
• Maintaining proper coolant flow to avoid engine overheating
• Addressing hose swelling or softening due to heat exposure
• Ensuring a secure fit with correct hose diameter for reliable sealing

Installation Notes and Tips

When installing the Dayco 71903 radiator hose, ensure the engine is cool to prevent burns. Verify that both hose ends match the 1 1/2 inch inside diameter fittings on your vehicle. Use appropriate clamps to secure the hose and check for any signs of twisting or kinking during installation. Inspect the surrounding components for wear or damage that could affect hose performance. Proper routing is essential to avoid contact with moving parts or excessive heat sources.

Quality Assurance and Warranty

Dayco manufactures the 71903 radiator coolant hose to meet SAE specifications, providing assurance of material quality and dimensional accuracy. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed warranties covering defects in material and workmanship. For exact warranty terms, consult the product documentation or Dayco directly.