Dayco 70391 Radiator Coolant Hose - Lower or Lower - Pipe To Engine

Overview of Dayco Curved Radiator Hose 70391

The Dayco Curved Radiator Hose 70391 is designed for reliable cooling system performance in select Dodge and Ford vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent heat resistance and flexibility for optimal engine temperature regulation.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black single inside diameter hose with 1 3/4 inch diameter on both ends
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height measures 12 3/4 inches for precise fitment
• Compatible with Dodge Dakota and Ford F-100, F-250, F-350 models

Detailed Product Description

The Dayco Curved Radiator Hose product line focuses on delivering radiator coolant hoses that meet stringent SAE standards for durability and performance. The 70391 part number features a curved design that facilitates proper coolant flow and fitment in the cooling systems of Dodge Dakota and Ford F-series trucks. Made from EPDM, this hose offers resistance to heat, ozone, and coolant chemicals, which helps maintain system integrity under demanding operating conditions. Both ends have a consistent inside diameter of 1 3/4 inches, ensuring a secure connection to radiator and engine fittings without leaks.

Applications and Problem Solving

• Replaces worn or cracked radiator coolant hoses in Dodge Dakota and Ford F-100, F-250, F-350 vehicles
• Prevents coolant leaks that can cause engine overheating
• Addresses hose swelling or softening due to heat exposure
• Restores proper coolant flow for efficient engine temperature control
• Eliminates issues related to hose collapse or blockage

Installation Notes and Tips

• Ensure engine is cool before removing the old radiator hose
• Check hose clamps and replace if corroded or damaged
• Verify the 1 3/4 inch inside diameter matches your vehicle’s fittings
• Inspect surrounding components for wear or damage during installation
• Properly route the curved hose to avoid kinks or interference with other engine parts

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70391 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The EPDM material construction provides durability against heat and chemical exposure. While specific warranty details are not provided, Dayco products typically adhere to manufacturer quality controls to support reliable vehicle operation.