Dayco 71635 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose 71635

Dayco 71635 is a curved radiator coolant hose built for lower cooling-system routing on select Chrysler and Dodge vehicles. It uses EPDM construction and a single I.D. hose design with 1 1/4-inch inside diameter at both ends for a direct replacement-style fit.

Compatible with 1993-1997 Chrysler Concorde, lower; 1993-1997 Chrysler Intrepid, lower; 1994-1997 Chrysler LHS, lower; 1993-1997 Dodge Intrepid, lower; and 1994-1996 Chrysler New Yorker, lower.

Key Features

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

Product Details

This Dayco Curved Radiator Hose is engineered for lower radiator coolant flow where a formed hose shape is required. The EPDM material is commonly used in engine cooling applications because it handles heat and coolant exposure well, while the curved profile helps match the routing used on the listed Chrysler and Dodge platforms. Dayco 71635 is a practical replacement choice for owners servicing a lower radiator hose on a Chrysler Concorde, Chrysler Intrepid, Chrysler LHS, Dodge Intrepid, or Chrysler New Yorker.

This part cross-references Gates 22979 for the same application.

Common Problems This Hose Can Address

• Coolant leakage from a cracked or aged lower radiator hose
• Softening, swelling, or collapse of an original hose under heat
• Restricted coolant flow caused by hose deterioration
• Improper hose routing after a previous repair
• Maintenance replacement on aging Chrysler and Dodge cooling systems

Installation Notes and Tips

Inspect the hose necks, clamps, and adjoining radiator and engine fittings before installation. Confirm the lower hose routing matches the vehicle application and verify the 1 1/4-inch end diameters before assembly. After installation, refill the cooling system with the correct coolant mixture and check for leaks with the engine at operating temperature.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and dimensional standards for cooling-system service.