Dayco 71281 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose for Ford Trucks

The Dayco 71281 curved radiator hose is a radiator coolant hose built for upper cooling-system routing on select Ford trucks and SUVs. It uses EPDM construction and a dual I.D. design to match the application-specific hose path on 1985-1991 Ford Bronco, F-150, F-250, and F-350 models.

Key Features

• EPDM rubber construction for cooling-system service
• Black finish for a factory-style appearance
• Dual I.D. hose design with 1 1/2 in. and 1 3/4 in. inside diameters
• Upper radiator hose position for curved 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 71281 is a curved radiator hose engineered for upper coolant routing where a formed hose is required to connect different-size outlets. The EPDM material is suited for cooling-system use, while the dual I.D. configuration helps match the varying connection sizes found on the listed Ford applications. This part cross-references Ford OE numbers such as E5TA-8B274-KA and E8TZ-8260-D for the same application. It is a direct-fit option for 1985-1991 Ford Bronco, upper; 1985-1991 Ford F-150, upper; 1985-1991 Ford F-250, upper; and 1985-1991 Ford F-350, upper. The Dayco 71281 part number is also useful when searching for a replacement upper radiator hose for classic Ford truck cooling repairs.

What It Helps Address

• Cracked or aged upper radiator hose material
• Coolant leaks at the hose connection points
• Improper hose routing on curved upper radiator runs
• Replacement needs for worn Ford Bronco and Ford F-Series cooling hoses
• Mismatch between different hose-end inside diameters

Installation Notes and Tips

Verify the hose routing, end diameters, and upper position before installation. Inspect the radiator necks and engine-side connections for corrosion, scale, or sharp edges that could affect sealing. Confirm the hose follows the original curved path without twisting, and check clamp condition during service. Use the vehicle application details to match the correct Ford Bronco, F-150, F-250, or F-350 cooling-system layout before final assembly.

Quality Assurance

This Dayco hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent cooling-system fit and material standards for the listed applications. Part number 71281 is identified for select Ford upper radiator hose replacements and is backed by Dayco product-line engineering for cooling-system service.