Dayco 71654 Radiator Coolant Hose - Upper

Curved Upper Radiator Hose for Ford Ranger

Dayco 71654 is a curved radiator coolant hose built for upper cooling-system routing on select Ford Ranger and Mazda B3000 applications. Made from EPDM rubber and formed as a dual I.D. hose, it provides the shaped fit needed for proper coolant flow in the engine bay.

Key Features

• EPDM construction for coolant-system durability
• Black finish for a clean OE-style appearance
• Dual I.D. hose design with 1 13/32 in. and 1 15/32 in. inside diameters
• Curved upper hose profile for specific routing needs
• 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 71654 is a radiator coolant hose designed for upper hose placement where a curved shape and dual inside diameters are required. The EPDM rubber construction is suited for cooling-system service, while the molded profile helps maintain the correct hose path in the engine bay. This part is listed for 1991-1994 Ford Ranger, upper, and 1994 Mazda B3000, upper. It also cross-references Ford F3TZ-8260-A for the same application.

As part of the Dayco Curved Radiator Hose line, this hose is focused on application-specific fitment rather than universal sizing. For Ford Ranger and Mazda B3000 cooling repairs, Dayco 71654 provides the correct upper hose configuration for vehicles that require the listed dual I.D. dimensions.

Common Problems This Hose Can Address

• Cracked or hardened upper radiator hose material
• Coolant leaks at the hose body from age or heat cycling
• Improper hose routing caused by a worn or misshaped hose
• Restricted coolant transfer through a deteriorated hose
• Cooling-system service needs on Ford Ranger and Mazda B3000 upper hose applications

Installation Notes and Tips

Verify the end inside diameters, hose routing, and upper hose position before installation. Inspect hose clamps, mating necks, and nearby cooling components for wear or corrosion before transferring the new hose into service. Confirm the hose follows the original curved path without twisting so coolant flow and clearance remain correct.

Quality Assurance

This hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting standardized cooling-hose construction for the listed applications.