Dayco 71859 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose 71859

Dayco 71859 is a curved radiator coolant hose built for lower cooling-system routing on select Chrysler, Dodge, and Plymouth minivans. It uses EPDM construction and a dual I.D. design to match the different connection sizes found in the listed applications.

This curved radiator hose is a direct-fit cooling hose for 1996-2000 Dodge Caravan lower hose applications, 1996-1997 Dodge Grand Caravan lower hose applications, 1996-2000 Plymouth Voyager lower hose applications, 1996-1997 Plymouth Grand Voyager lower hose applications, and 2000 Chrysler Voyager lower hose applications.

Key Features

• EPDM rubber construction for coolant-system service
• Black finish for OE-style appearance
• Dual I.D. hose with 1 3/8 in. end 1 inside diameter and 1 1/2 in. end 2 inside diameter
• Curved radiator hose profile for lower hose routing
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Curved Radiator Hose line for application-specific cooling hose replacement

Detailed Description

Dayco 71859 is a radiator coolant hose engineered for lower radiator connections where a curved hose shape and dual inside diameters are required. The EPDM material is commonly used in cooling-system hoses for its resistance to heat and coolant exposure, while the SAE J20R4 Class D-1 and SAE J1684 Type EC specifications provide a clear reference for the hose’s construction standard. This part number is listed for select Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Plymouth Voyager, and Plymouth Grand Voyager applications, making it a focused replacement for the original lower hose routing. Dayco 71859 also cross-references Gates 22224 for the same application.

What It Helps Address

• Cracked or deteriorated lower radiator hose material
• Coolant leaks at the hose connection points
• Incorrect hose fitment caused by mismatched inside diameters
• Restricted cooling-system flow from a damaged curved hose
• Replacement needs on Chrysler, Dodge, and Plymouth minivan cooling systems

Installation Notes and Tips

Verify the hose routing, end diameters, and lower-position application before installation. Inspect the mating necks, clamps, and nearby cooling components for wear or corrosion, and replace any damaged parts before filling the system. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality Assurance

Dayco 71859 is manufactured to published SAE hose standards and application-specific dimensions for the listed vehicles. The Dayco Curved Radiator Hose line is built for direct replacement use in cooling-system service.