Dayco 71450 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 71450

Dayco 71450 is a curved radiator coolant hose built from EPDM for upper cooling-system routing. With a 1 5/16 in. inside diameter at both ends and a black finish, it is a direct-fit style hose for select Toyota, Ford, Mazda, and Lexus applications.

This Dayco Curved Radiator Hose line is focused on replacement cooling hoses shaped for specific engine bay routing. The curved profile helps match OE-style hose paths in applications such as Toyota Camry, Toyota Solara, and Ford Probe upper radiator connections.

Key Features

• EPDM construction for coolant-system service
• Black finish for a clean OE-style appearance
• 1 5/16 in. inside diameter at both ends
• Single I.D. hose design
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Upper radiator hose application for select vehicles

Detailed Description

Dayco 71450 is a curved radiator hose for upper coolant routing in select applications. The EPDM rubber construction is suited for radiator and heater-cooling service, while the curved shape supports proper hose alignment in tight engine compartments. This part number, 71450, is listed for 1988-1991 Toyota Camry, 2002-2003 and 2005-2007 Toyota Solara, 1993-1997 Ford Probe, 1993 Mazda 626, 1993 Mazda MX-6, and 1990-1991 Lexus ES250.

This part cross-references Gates 22321 for the same application.

Common Replacement Uses

• Replacing a cracked or hardened upper radiator hose
• Addressing coolant seepage at the hose connection points
• Restoring proper coolant flow in the upper radiator circuit
• Correcting hose fitment issues caused by age-related swelling or collapse
• Replacing a hose with incorrect bend shape or routing

Installation Notes and Tips

Verify the hose diameter, routing, and upper-position fitment before installation. Inspect the radiator neck and engine-side connection surfaces for corrosion, residue, or sharp edges that can affect sealing. Confirm the hose follows the original curved path without twisting, and check clamp condition during service.

Quality Assurance

Dayco 71450 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for radiator hose service. Confirm vehicle application by year, make, model, and upper hose position before ordering.