Dayco 71398 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71398

The Dayco Curved Radiator Hose 71398 is designed specifically for Hyundai and Mitsubishi vehicles, including the Excel, Expo, and Precis models. This radiator coolant hose features a dual inside diameter design to ensure a precise fit and reliable coolant flow in your vehicle's cooling system.

• Constructed from durable EPDM material for heat and chemical resistance
• Dual inside diameters: 1 5/16 inches and 1 3/8 inches for secure connections
• Black color for standard OEM appearance
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 15 1/2 inches for proper routing in engine bay
• Does not include heat shield or protective sleeve

Detailed Product Description

The Dayco Curved Radiator Hose line is engineered to meet the specific cooling system requirements of Hyundai and Mitsubishi vehicles such as the Excel, Expo, and Precis. Part number 71398 is a dual inside diameter hose, allowing it to connect two different sized fittings securely. Made from EPDM (ethylene propylene diene monomer) rubber, this hose offers excellent resistance to heat, ozone, and coolant chemicals, ensuring durability and long service life. The hose’s black color matches OEM standards, maintaining the original look under the hood. It meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards, which define performance criteria for coolant hoses, including pressure, temperature, and chemical resistance. The trunk height of 15 1/2 inches ensures proper fitment and routing within the engine compartment without interference.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses on Hyundai Excel, Expo, and Mitsubishi Precis
• Resolving coolant leaks caused by hose degradation or improper fit
• Preventing overheating due to compromised coolant flow
• Maintaining proper coolant system pressure and temperature regulation
• Ensuring compatibility with dual diameter fittings in the cooling system

Installation Notes and Tips

• Verify hose dimensions and fitment with your vehicle’s cooling system before installation
• Ensure clamps are properly tightened to prevent leaks but avoid over-tightening which can damage the hose
• Inspect surrounding components for wear or damage during installation
• Replace coolant as recommended after hose installation to maintain system integrity

Quality Assurance and Warranty

Dayco’s Curved Radiator Hose 71398 is manufactured to meet strict SAE specifications, ensuring reliable performance in demanding automotive environments. While specific warranty details may vary, Dayco products typically come with a limited warranty against defects in material and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.