Dayco 71858 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 71858

Dayco 71858 is a curved radiator coolant hose built for upper cooling-system routing on select Chrysler, Dodge, and Plymouth minivans. Made from EPDM rubber with a black finish, it is shaped for 1 1/4-inch inside diameter connections at both ends and follows SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.

This Dayco Curved Radiator Hose line is focused on direct-fit cooling hose replacement for vehicles that need a formed hose profile rather than a straight universal hose. For shoppers searching for a 2000 Chrysler Voyager upper radiator hose or a 1996-2000 Dodge Caravan upper coolant hose, Dayco 71858 matches the listed application.

• EPDM construction for cooling-system hose service
• Curved, single I.D. hose design for upper radiator routing
• 1 1/4-inch inside diameter at both ends
• Black finish
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards

Vehicle Fitment

• Fits 2000 Chrysler Voyager, Upper
• Fits 1996-2000 Dodge Caravan, Upper
• Fits 1996-2000 Plymouth Voyager, Upper
• Fits 1996-1997 Dodge Grand Caravan, Upper
• Fits 1996-1997 Plymouth Grand Voyager, Upper

Product Details

Dayco 71858 is a formed radiator coolant hose for upper hose applications where the hose must follow the factory bend and maintain proper coolant flow. The EPDM rubber construction is suited for engine bay heat and coolant exposure, while the single I.D. hose layout supports a clean connection between matching 1 1/4-inch fittings. This part cross-references Gates 22223 and NAPA 8865 for the same application.

Common Cooling Issues It Can Address

• Cracked or split upper radiator hose
• Coolant seepage at the hose body or connection points
• Collapsed or softened hose from age and heat cycling
• Incorrect hose shape after prior replacement
• Restricted coolant transfer through a deteriorated hose

Installation Notes and Tips

Inspect the radiator neck, thermostat housing, and clamp surfaces before installation. Confirm the hose routing matches the factory curved path and verify both ends seat fully on the 1 1/4-inch connections. Replace worn clamps if needed and check coolant level after the engine reaches operating temperature.

Quality Assurance

Dayco manufactures this hose to published SAE material and performance standards for radiator coolant service. Verify fitment against the vehicle application and hose dimensions before installation.