Dayco 71661 Radiator Coolant Hose - Upper
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Dayco
 Curved Radiator Hose

Dayco 71661 Radiator Coolant Hose - Upper

Brand Dayco 71661
Position Upper
Material Epdm
Color Black
End 1 Inside Diameter 1 5/16
End 2 Inside Diameter 1 7/16
Contains Heat Shield N
Contains Protective Sleeve N
Hose Type Dual i.d. hose
SAE Specification Sae j20r4 class d-1, sae j1684 type ec
Trunk Height 11
Product line Curved Radiator Hose
Fits Ford · 1 vehicle

Curved hose design. Helps route coolant smoothly through the cooling system.

EPDM construction. Offers dependable resistance to heat and coolant exposure.

Dual I.D. hose. Features two inside diameters for a precise fit.

Cross-references ACDelco 22074M, CARQUEST 20799 and Duralast B71661 for the same application. See all 9.

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Dayco Curved Radiator Hose for Ford Aerostar

Dayco 71661 is a curved radiator coolant hose built for the cooling system on the 1986 Ford Aerostar upper hose location. Made from EPDM rubber and formed as a dual I.D. hose, it provides the correct routing and diameter transition for this application.

Compatible with 1986 Ford Aerostar upper radiator hose applications, this Dayco hose is specified to SAE J20R4 Class D-1 and SAE J1684 Type EC standards. The black EPDM construction is selected for coolant service and underhood temperature exposure.

Key Features

  • Part number 71661 for direct identification
  • Curved radiator hose for upper cooling system routing
  • Dual I.D. hose with 1 5/16 in. end 1 and 1 7/16 in. end 2
  • EPDM rubber construction in black finish
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Fits 1986 Ford Aerostar, upper

Product Details

Dayco’s Curved Radiator Hose line focuses on formed coolant hoses that match vehicle-specific routing and connection sizes. This 71661 hose is shaped for the upper radiator position on the 1986 Ford Aerostar and uses a dual inside diameter design to connect the cooling system components with the proper fit. The Dayco 71661 part number is also useful when cross-referencing replacement listings for the same application.

This part cross-references Ford E69Z-8260-B for the same application.

Common Cooling System Issues

  • Cracked or hardened upper radiator hose
  • Coolant leaks at hose connections
  • Incorrect hose routing on the Ford Aerostar cooling system
  • Softening or swelling from age and heat exposure
  • Restricted replacement due to mismatched hose diameters

Installation Notes

Verify the upper hose routing and end diameters before installation. Inspect the radiator neck, engine outlet, and clamps for wear or corrosion, and replace any damaged sealing surfaces before installing the new hose. Confirm the hose seats fully on both ends and check coolant level after the system is refilled and bled.

Quality Assurance

This Dayco radiator coolant hose is manufactured to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for coolant hose service.

Related reading

This part fits 1 vehicle
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1986FordAerostar2.8LV6UpperCurved Radiator Hose
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 22074MCARQUEST — 20799Duralast — B71661Ford — E69Z-8260-BFreshstart — 393Gates — 20799Goodyear — 61361Motorcraft — KM1548NAPA — 7562