Dayco 71751 Radiator Coolant Hose - Lower or Upper

Overview of Dayco Curved Radiator Hose 71751

The Dayco Curved Radiator Hose 71751 is designed for reliable cooling system performance in select Mercury, Nissan, and Pontiac vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent heat resistance and flexibility for models like the Mercury Villager, Nissan Quest, and Pontiac GTO.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black single inside diameter hose with 1 5/16 inch diameter on both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 19 inches for precise fitment
• Compatible with Mercury Villager, Nissan Quest, and Pontiac GTO models

Dayco Curved Radiator Hose Product Line Details

The Curved Radiator Hose line by Dayco focuses on delivering hoses with precise bends and dimensions to fit specific vehicle cooling systems. This product line emphasizes durability and compliance with SAE standards, ensuring that hoses like part number 71751 maintain proper coolant flow and withstand typical engine bay conditions without the need for additional heat shields or protective sleeves.

Technical Description and Specifications

Part number 71751 is a single inside diameter hose made 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 5/16 inches, making it suitable for consistent coolant flow. The hose does not include a heat shield or protective sleeve, which is typical for this type of curved radiator hose. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses.

Applications and Problem Solving

• Replaces worn or cracked radiator coolant hoses in Mercury Villager, Nissan Quest, and Pontiac GTO
• Prevents coolant leaks caused by hose degradation or improper fit
• Maintains proper coolant flow to avoid engine overheating
• Addresses hose swelling or softening due to heat exposure
• Restores cooling system integrity after damage or wear

Installation Notes and Tips

• Ensure the hose diameter matches the radiator and engine fittings (1 5/16 inch)
• Inspect clamps and surrounding components for wear before installation
• Replace clamps if they show signs of corrosion or damage
• Verify proper hose routing to avoid kinks or contact with hot engine parts
• Check for leaks after installation and during initial engine operation

Quality Assurance and Warranty

Dayco’s Curved Radiator Hose 71751 is manufactured to meet SAE specifications, providing assurance of material quality and dimensional accuracy. While specific warranty details are not provided, Dayco products typically adhere to industry standards for durability and performance. Users should consult product documentation or the vehicle manufacturer for warranty coverage related to this part.