Dayco 71959 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose 71959

Dayco 71959 is a curved radiator coolant hose built for specific Ford E-Series applications with lower hose routing. It uses EPDM construction and a branched hose design to match the factory-style coolant path on listed vehicles, including Ford E-150 Econoline and Ford E-250 Econoline models.

For buyers searching for a lower radiator hose for a 1997-2003 Ford E-150 or E-250, this Dayco curved radiator hose 71959 provides the correct fitment profile for the listed applications. It is also cross-referenced to select OE and aftermarket numbers for the same application.

Key Features

• EPDM rubber construction for coolant-system service
• Black finish
• Curved, branched hose layout
• Lower hose position for listed Ford E-Series vans
• End 1 inside diameter: 1 23/32 in.
• End 2 inside diameter: 1 23/32 in.
• End 3 inside diameter: 31/32 in.
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Product Details

Dayco’s Curved Radiator Hose line focuses on application-specific coolant routing, and part number 71959 follows that approach with a formed shape and branched configuration. The hose is sized for the listed Ford E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline, E-150, E-150 Club Wagon, and E-250 lower radiator hose applications, including 1997-2003 model years noted without an oil cooler where specified. The EPDM material is commonly used in cooling systems for its resistance to heat and coolant exposure, while the SAE specifications provide a clear reference for hose construction standards.

This part cross-references ACDelco 26340X and Gates 22317 for the same application.

Common Uses

• Replacing a leaking lower radiator hose on a Ford E-150 Econoline
• Replacing a cracked lower coolant hose on a Ford E-250 Econoline
• Restoring proper coolant flow in a Ford E-Series van cooling system
• Addressing hose swelling, soft spots, or age-related deterioration
• Correcting a damaged branched hose on listed Ford van applications

Installation Notes

Verify the vehicle year, model, and lower-hose routing before installation. Confirm the application notes, including the “w/o Oil Cooler” requirement where listed, and compare the hose shape and end diameters to the removed part. Inspect adjoining clamps, necks, and coolant passages for wear or corrosion before installing the new hose.

Quality Assurance

Dayco 71959 is built as an application-specific radiator coolant hose and is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards. Its EPDM construction and formed design support proper fitment on the listed Ford E-Series lower hose applications.