Dayco 71656 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 71656

Dayco 71656 is a curved radiator coolant hose for upper cooling-system routing on select Nissan Quest and Mercury Villager applications. Built from EPDM rubber with a black finish, it matches the hose shape and inside diameter needed for a secure coolant connection in the engine bay.

Key Features

• EPDM construction for coolant-hose service
• Black curved radiator hose profile
• Single I.D. hose design
• 1 5/16 in. inside diameter at both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Compatible with upper hose routing on select Mercury Villager and Nissan Quest models

Product Details

This Dayco Curved Radiator Hose line is built for cooling-system replacement where a formed upper hose is required. Part number 71656 uses EPDM material for standard radiator coolant service and a curved shape that follows the factory routing on 1993-2002 Mercury Villager and 1993-2002 Nissan Quest applications. The hose measures 1 5/16 inches inside diameter at each end and is specified as a single I.D. hose, making it a direct match for the listed upper radiator connection points. This part cross-references Gates 22028 for the same application.

Vehicle Fitment

• Fits 1993-2002 Mercury Villager, Upper — Curved Radiator Hose
• Fits 1993-2002 Nissan Quest, Upper — Curved Radiator Hose

Common Replacement Reasons

• Cracked or hardened upper radiator hose
• Coolant seepage at the hose connection
• Soft spots, swelling, or hose collapse
• Incorrect hose shape or diameter during cooling-system repair
• Maintenance replacement during radiator or thermostat service

Installation Notes

Verify the upper hose routing, end diameters, and connection points before installation. Inspect hose clamps, radiator necks, and engine fittings for corrosion or damage, and replace worn clamps as needed. Confirm the hose is seated fully and routed without kinks or contact with moving or hot components.

Quality Assurance

Dayco radiator hoses are built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling-system service. The EPDM construction and formed profile support proper fitment on the listed Nissan Quest and Mercury Villager applications.