Dayco 71651 Engine Coolant Bypass Hose

Dayco Curved Radiator Hose for Cooling System Service

The Dayco 71651 is a curved radiator hose built for engine coolant bypass and cooling system routing on select Dodge, Jeep, and Ford applications. Made from EPDM rubber with a black finish, it uses a single I.D. hose design and 31/32-inch inside diameters at both ends for a direct replacement-style fit.

Compatible With 1992-2003 Dodge Dakota, 1998-2003 Dodge Durango, 1994-2003 Dodge Ram 1500, and other listed applications, this hose is specified to SAE J20R4 Class D-1 and SAE J1684 Type EC standards. The Dayco 71651 is also cross-referenced to common aftermarket and OE numbers for the same application.

Key Features

• Brand: Dayco Curved Radiator Hose
• Part number: 71651
• Engine coolant bypass hose for cooling system routing
• EPDM construction for coolant service
• Black finish with curved hose profile
• Single I.D. hose design
• 31/32-inch inside diameter at both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Product Details

Dayco Curved Radiator Hose 71651 is built for vehicles that use a formed coolant hose to route engine coolant between cooling system components. The EPDM material is selected for coolant exposure, while the curved shape supports the factory-style hose path used on many Dodge Ram 1500, Dodge Dakota, Jeep Grand Cherokee, and Ford Ranger applications. This part number, 71651, is a direct replacement-style option for service work where the original hose has aged, softened, or cracked.

This part cross-references ACDelco 14240S and Gates 22038 for the same application.

Common Cooling System Issues It Can Address

• Coolant leaks from a cracked or deteriorated hose
• Softening, swelling, or hardening of the original hose material
• Loss of coolant flow through a damaged bypass hose
• Visible hose wear from heat and age
• Cooling system service on listed Dodge, Jeep, and Ford vehicles

Installation Notes and Tips

Verify hose routing, end diameters, and vehicle application before installation. Inspect adjoining clamps, fittings, and coolant passages for corrosion or residue, and replace worn components as needed during cooling system service. Confirm the hose follows the original curved path without twisting so the cooling system maintains proper routing on the vehicle.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for coolant hose applications. The EPDM construction and formed profile support consistent fitment across the listed Dodge Dakota, Dodge Ram 1500, and Jeep Grand Cherokee applications.

Compatible vehicle coverage includes 1992-2003 Dodge Dakota, 1998-2003 Dodge Durango, 1994-2003 Dodge Ram 1500, 1999-2003 Dodge Ram 1500 Van, 1999-2003 Dodge Ram 2500 Van, 1999-2003 Dodge Ram 3500 Van, 1994-2002 Dodge Ram 2500, 1994-2002 Dodge Ram 3500, 1995-1998 Dodge B1500, 1995-1998 Dodge B2500, 1995-1998 Dodge B3500, 1997-1998 Ford Ranger, 1993-1998 Jeep Grand Cherokee, 1992-1994 Dodge B150, 1992-1994 Dodge B250, 1992-1994 Dodge B350, 1992-1993 Dodge D150, 1992-1993 Dodge D250, 1993 Dodge D350, 1992-1993 Dodge Ramcharger, 1992-1993 Dodge W150, 1992-1993 Dodge W250, 1993 Dodge W350, and 1993 Jeep Grand Wagoneer.