Dayco
Curved Radiator Hose

Dayco 71025 Radiator Coolant Hose - Upper

Brand Dayco 71025
Position Upper
Material Epdm
Color Black
End 1 Inside Diameter 1 1/4
End 2 Inside Diameter 1 1/4
Contains Heat Shield N
Contains Protective Sleeve N
Hose Type Single i.d. hose
SAE Specification Sae j20r4 class d-1, sae j1684 type ec
Trunk Height 26
Product line Curved Radiator Hose
Fits Buick, Chevrolet, GMC, Oldsmobile, and Pontiac · 169 vehicles

Curved radiator hose. Single I.D. hose for a straightforward coolant connection.

EPDM construction. Built for dependable cooling-system durability.

SAE J20R4 Class D-1. Meets recognized hose performance standards.

Cross-references ACDelco 26060X, ACDelco 26181X and Atlas MC92 for the same application. See all 26.

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Dayco 71025 Curved Radiator Hose

Dayco 71025 is a curved upper radiator coolant hose built for vehicles that need a 1 1/4 in. inside diameter at both ends. Made from EPDM rubber and finished in black, it is shaped for direct coolant routing in a wide range of Chevrolet, GMC, Buick, Oldsmobile, and Pontiac applications.

For shoppers searching for an upper radiator hose for a 1988-1991 Chevrolet C1500 or a curved radiator hose for a 1980-1983 Pontiac Grand Prix, this Dayco hose matches the listed fitment and SAE specifications.

Key Features

  • EPDM construction for coolant-system service
  • Black curved radiator hose design
  • 1 1/4 in. inside diameter at both ends
  • Single I.D. hose configuration
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements
  • Fits upper radiator hose applications across multiple GM platforms

Product Details

The Dayco Curved Radiator Hose line is engineered for formed coolant routing where a straight hose will not follow the factory path. Part number 71025 is listed for upper radiator positions on many classic GM trucks and passenger vehicles, including Chevrolet C1500, Chevrolet G10, GMC G1500, Buick Regal, Pontiac Grand Prix, and related models. This part cross-references Gates 21189 and NAPA 7900 for the same application.

Use Dayco 71025 when you need a replacement upper radiator coolant hose that matches the original curved routing and hose diameter. The EPDM material is selected for cooling-system service, and the hose is specified without a heat shield or protective sleeve.

Vehicle Fitment

  • Fits 1992-1993 Chevrolet G10, Upper; fits vehicles without air conditioning.
  • Fits 1992-1993 Chevrolet G20, Upper; fits vehicles without air conditioning.
  • Fits 1992-1993 Chevrolet G30, Upper; fits vehicles without air conditioning.
  • Fits 1992-1993 GMC G1500, Upper; fits vehicles without air conditioning.
  • Fits 1992-1993 GMC G2500, Upper; fits vehicles without air conditioning.
  • Fits 1992-1993 GMC G3500, Upper; fits vehicles without air conditioning.
  • Fits 1988-1991 Chevrolet C1500, Upper.
  • Fits 1988-1991 Chevrolet C2500, Upper.
  • Fits 1985-1991 Chevrolet G10, Upper.
  • Fits 1985-1991 Chevrolet G20, Upper.
  • Fits 1985-1991 Chevrolet G30, Upper.
  • Fits 1988-1991 Chevrolet K1500, Upper.
  • Fits 1988-1991 Chevrolet K2500, Upper.
  • Fits 1988-1991 GMC C1500, Upper.
  • Fits 1988-1991 GMC C2500, Upper.
  • Fits 1985-1991 GMC G1500, Upper.
  • Fits 1985-1991 GMC G2500, Upper.
  • Fits 1985-1991 GMC G3500, Upper.
  • Fits 1988-1991 GMC K1500, Upper.
  • Fits 1988-1991 GMC K2500, Upper.
  • Fits 1980-1983 Buick LeSabre, Upper.
  • Fits 1980-1983 Buick Regal, Upper.
  • Fits 1980-1983 Chevrolet Caprice, Upper.
  • Fits 1980-1983 Chevrolet El Camino, Upper.
  • Fits 1980-1983 Chevrolet Impala, Upper.
  • Fits 1982-1983 Chevrolet Malibu, Upper.
  • Fits 1980 Chevrolet Malibu, Upper.
  • Fits 1980-1983 Chevrolet Monte Carlo, Upper.
  • Fits 1981-1983 Oldsmobile 98, Upper.
  • Fits 1980-1983 Oldsmobile Cutlass Calais, Upper.
  • Fits 1980-1983 Oldsmobile Cutlass Cruiser, Upper.
  • Fits 1980-1983 Oldsmobile Cutlass Supreme, Upper.
  • Fits 1980-1983 Oldsmobile Delta 88, Upper.
  • Fits 1980-1983 Pontiac Bonneville, Upper.
  • Fits 1982-1983 Pontiac Grand LeMans, Upper.
  • Fits 1980 Pontiac Grand LeMans, Upper.
  • Fits 1980-1983 Pontiac Grand Prix, Upper.
  • Fits 1981-1982 Pontiac Parisienne, Upper.
  • Fits 1980-1981 Buick Century, Upper.
  • Fits 1981 Buick Regal, Upper; w/o 70 Amp Alt.
  • Fits 1981 Chevrolet Malibu, Upper; Calif.
  • Fits 1981 Chevrolet Monte Carlo, Upper; Calif.
  • Fits 1980-1981 Oldsmobile Cutlass, Upper.
  • Fits 1980-1981 Pontiac Catalina, Upper.
  • Fits 1980-1981 Pontiac Laurentian, Upper.
  • Fits 1980-1981 Pontiac LeMans, Upper.
  • Fits 1980 Oldsmobile Cutlass Salon, Upper.

Installation Notes

Confirm the upper hose routing, end diameters, and vehicle configuration before installation. This hose is listed for specific applications, including some vehicles without air conditioning and select California models. Inspect hose necks, clamps, and coolant condition during replacement, and verify that the formed shape follows the factory path without twisting.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling-system service. The EPDM construction and application-specific curvature support consistent fitment on the listed Chevrolet, GMC, Buick, Oldsmobile, and Pontiac vehicles.

This part fits 169 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1993ChevroletG104.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1993ChevroletG204.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1993ChevroletG304.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1993GMCG15004.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1993GMCG25004.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1993GMCG35004.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1992ChevroletG104.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1992ChevroletG204.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1992ChevroletG304.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1992GMCG15004.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1992GMCG25004.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1992GMCG35004.3LV6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1991ChevroletC15004.3LV6UpperCurved Radiator Hose
1991ChevroletC25004.3LV6UpperCurved Radiator Hose
1991ChevroletG104.3LV6UpperCurved Radiator Hose
1991ChevroletG204.3LV6UpperCurved Radiator Hose
1991ChevroletG304.3LV6UpperCurved Radiator Hose
1991ChevroletK15004.3LV6UpperCurved Radiator Hose
1991ChevroletK25004.3LV6UpperCurved Radiator Hose
1991GMCC15004.3LV6UpperCurved Radiator Hose
1991GMCC25004.3LV6UpperCurved Radiator Hose
1991GMCG15004.3LV6UpperCurved Radiator Hose
1991GMCG25004.3LV6UpperCurved Radiator Hose
1991GMCG35004.3LV6UpperCurved Radiator Hose
1991GMCK15004.3LV6UpperCurved Radiator Hose
1991GMCK25004.3LV6UpperCurved Radiator Hose
1990ChevroletC15004.3LV6UpperCurved Radiator Hose
1990ChevroletC25004.3LV6UpperCurved Radiator Hose
1990ChevroletG104.3LV6UpperCurved Radiator Hose
1990ChevroletG204.3LV6UpperCurved Radiator Hose
1990ChevroletG304.3LV6UpperCurved Radiator Hose
1990ChevroletK15004.3LV6UpperCurved Radiator Hose
1990ChevroletK25004.3LV6UpperCurved Radiator Hose
1990GMCC15004.3LV6UpperCurved Radiator Hose
1990GMCC25004.3LV6UpperCurved Radiator Hose
1990GMCG15004.3LV6UpperCurved Radiator Hose
1990GMCG25004.3LV6UpperCurved Radiator Hose
1990GMCG35004.3LV6UpperCurved Radiator Hose
1990GMCK15004.3LV6UpperCurved Radiator Hose
1990GMCK25004.3LV6UpperCurved Radiator Hose
1989ChevroletC15004.3LV6UpperCurved Radiator Hose
1989ChevroletC25004.3LV6UpperCurved Radiator Hose
1989ChevroletG104.3LV6UpperCurved Radiator Hose
1989ChevroletG204.3LV6UpperCurved Radiator Hose
1989ChevroletG304.3LV6UpperCurved Radiator Hose
1989ChevroletK15004.3LV6UpperCurved Radiator Hose
1989ChevroletK25004.3LV6UpperCurved Radiator Hose
1989GMCC15004.3LV6UpperCurved Radiator Hose
1989GMCC25004.3LV6UpperCurved Radiator Hose
1989GMCG15004.3LV6UpperCurved Radiator Hose
1989GMCG25004.3LV6UpperCurved Radiator Hose
1989GMCG35004.3LV6UpperCurved Radiator Hose
1989GMCK15004.3LV6UpperCurved Radiator Hose
1989GMCK25004.3LV6UpperCurved Radiator Hose
1988ChevroletC15004.3LV6UpperCurved Radiator Hose
1988ChevroletC25004.3LV6UpperCurved Radiator Hose
1988ChevroletG104.3LV6UpperCurved Radiator Hose
1988ChevroletG204.3LV6UpperCurved Radiator Hose
1988ChevroletG304.3LV6UpperCurved Radiator Hose
1988ChevroletK15004.3LV6UpperCurved Radiator Hose
1988ChevroletK25004.3LV6UpperCurved Radiator Hose
1988GMCC15004.3LV6UpperCurved Radiator Hose
1988GMCC25004.3LV6UpperCurved Radiator Hose
1988GMCG15004.3LV6UpperCurved Radiator Hose
1988GMCG25004.3LV6UpperCurved Radiator Hose
1988GMCG35004.3LV6UpperCurved Radiator Hose
1988GMCK15004.3LV6UpperCurved Radiator Hose
1988GMCK25004.3LV6UpperCurved Radiator Hose
1987ChevroletG104.3LV6UpperCurved Radiator Hose
1987ChevroletG204.3LV6UpperCurved Radiator Hose
1987ChevroletG304.3LV6UpperCurved Radiator Hose
1987GMCG15004.3LV6UpperCurved Radiator Hose
1987GMCG25004.3LV6UpperCurved Radiator Hose
1987GMCG35004.3LV6UpperCurved Radiator Hose
1986ChevroletG104.3LV6UpperCurved Radiator Hose
1986ChevroletG204.3LV6UpperCurved Radiator Hose
1986ChevroletG304.3LV6UpperCurved Radiator Hose
1986GMCG15004.3LV6UpperCurved Radiator Hose
1986GMCG25004.3LV6UpperCurved Radiator Hose
1986GMCG35004.3LV6UpperCurved Radiator Hose
1985ChevroletG104.3LV6UpperCurved Radiator Hose
1985ChevroletG204.3LV6UpperCurved Radiator Hose
1985ChevroletG304.3LV6UpperCurved Radiator Hose
1985GMCG15004.3LV6UpperCurved Radiator Hose
1985GMCG25004.3LV6UpperCurved Radiator Hose
1985GMCG35004.3LV6UpperCurved Radiator Hose
1983BuickLeSabre3.8LV6UpperCurved Radiator Hose
1983BuickLeSabre4.1LV6UpperCurved Radiator Hose
1983BuickRegal3.8LV6UpperCurved Radiator Hose
1983BuickRegal4.1LV6UpperCurved Radiator Hose
1983ChevroletCaprice3.8LV6UpperCurved Radiator Hose
1983ChevroletEl Camino3.8LV6UpperCurved Radiator Hose
1983ChevroletImpala3.8LV6UpperCurved Radiator Hose
1983ChevroletMalibu3.8LV6UpperCurved Radiator Hose
1983ChevroletMonte Carlo3.8LV6UpperCurved Radiator Hose
1983Oldsmobile984.1LV6UpperCurved Radiator Hose
1983OldsmobileCutlass Calais3.8LV6UpperCurved Radiator Hose
1983OldsmobileCutlass Cruiser3.8LV6UpperCurved Radiator Hose
1983OldsmobileCutlass Supreme3.8LV6UpperCurved Radiator Hose
1983OldsmobileDelta 883.8LV6UpperCurved Radiator Hose
1983PontiacBonneville3.8LV6UpperCurved Radiator Hose
1983PontiacGrand LeMans3.8LV6UpperCurved Radiator Hose
1983PontiacGrand Prix3.8LV6UpperCurved Radiator Hose
1982BuickLeSabre3.8LV6UpperCurved Radiator Hose
1982BuickLeSabre4.1LV6UpperCurved Radiator Hose
1982BuickRegal3.8LV6UpperCurved Radiator Hose
1982BuickRegal4.1LV6UpperCurved Radiator Hose
1982ChevroletCaprice3.8LV6UpperCurved Radiator Hose
1982ChevroletEl Camino3.8LV6UpperCurved Radiator Hose
1982ChevroletImpala3.8LV6UpperCurved Radiator Hose
1982ChevroletMalibu3.8LV6UpperCurved Radiator Hose
1982ChevroletMonte Carlo3.8LV6UpperCurved Radiator Hose
1982Oldsmobile984.1LV6UpperCurved Radiator Hose
1982OldsmobileCutlass Calais3.8LV6UpperCurved Radiator Hose
1982OldsmobileCutlass Cruiser3.8LV6UpperCurved Radiator Hose
1982OldsmobileCutlass Supreme3.8LV6UpperCurved Radiator Hose
1982OldsmobileDelta 883.8LV6UpperCurved Radiator Hose
1982PontiacBonneville3.8LV6UpperCurved Radiator Hose
1982PontiacBonneville4.1LV6UpperCurved Radiator Hose
1982PontiacGrand LeMans3.8LV6UpperCurved Radiator Hose
1982PontiacGrand LeMans4.1LV6UpperCurved Radiator Hose
1982PontiacGrand Prix3.8LV6UpperCurved Radiator Hose
1982PontiacGrand Prix4.1LV6UpperCurved Radiator Hose
1982PontiacParisienne3.8LV6UpperCurved Radiator Hose
1981BuickCentury3.8LV6UpperCurved Radiator Hose
1981BuickLeSabre3.8LV6UpperCurved Radiator Hose
1981BuickLeSabre4.1LV6UpperCurved Radiator Hose
1981BuickRegal3.8LV6UpperCurved Radiator Hose
1981BuickRegal3.8LV6Upperw/o 70 Amp Alt.; Curved Radiator Hose
1981ChevroletCaprice3.8LV6UpperCurved Radiator Hose
1981ChevroletEl Camino3.8LV6UpperCurved Radiator Hose
1981ChevroletImpala3.8LV6UpperCurved Radiator Hose
1981ChevroletImpala5.7LV8GASUpperCurved Radiator Hose
1981ChevroletMalibu3.8LV6UpperCalif.; Curved Radiator Hose
1981ChevroletMonte Carlo3.8LV6UpperCalif.; Curved Radiator Hose
1981ChevroletMonte Carlo3.8LV6UpperCurved Radiator Hose
1981Oldsmobile984.1LV6UpperCurved Radiator Hose
1981OldsmobileCutlass3.8LV6UpperCurved Radiator Hose
1981OldsmobileCutlass Calais3.8LV6UpperCurved Radiator Hose
1981OldsmobileCutlass Cruiser3.8LV6UpperCurved Radiator Hose
1981OldsmobileCutlass Supreme3.8LV6UpperCurved Radiator Hose
1981OldsmobileDelta 883.8LV6UpperCurved Radiator Hose
1981PontiacBonneville3.8LV6UpperCurved Radiator Hose
1981PontiacCatalina3.8LV6UpperCurved Radiator Hose
1981PontiacGrand Prix3.8LV6UpperCurved Radiator Hose
1981PontiacLaurentian3.8LV6UpperCurved Radiator Hose
1981PontiacLeMans3.8LV6UpperCurved Radiator Hose
1981PontiacParisienne3.8LV6UpperCurved Radiator Hose
1980BuickCentury3.8LV6UpperCurved Radiator Hose
1980BuickLeSabre3.8LV6UpperCurved Radiator Hose
1980BuickLeSabre4.1LV6UpperCurved Radiator Hose
1980BuickRegal3.8LV6UpperCurved Radiator Hose
1980ChevroletCaprice3.8LV6UpperCurved Radiator Hose
1980ChevroletEl Camino3.8LV6UpperCurved Radiator Hose
1980ChevroletImpala3.8LV6UpperCurved Radiator Hose
1980ChevroletMalibu3.8LV6UpperCurved Radiator Hose
1980ChevroletMonte Carlo3.8LV6UpperCurved Radiator Hose
1980OldsmobileCutlass3.8LV6UpperCurved Radiator Hose
1980OldsmobileCutlass Calais3.8LV6UpperCurved Radiator Hose
1980OldsmobileCutlass Cruiser3.8LV6UpperCurved Radiator Hose
1980OldsmobileCutlass Salon3.8LV6UpperCurved Radiator Hose
1980OldsmobileCutlass Supreme3.8LV6UpperCurved Radiator Hose
1980OldsmobileDelta 883.8LV6UpperCurved Radiator Hose
1980PontiacBonneville3.8LV6UpperCurved Radiator Hose
1980PontiacCatalina3.8LV6UpperCurved Radiator Hose
1980PontiacGrand LeMans3.8LV6UpperCurved Radiator Hose
1980PontiacGrand Prix3.8LV6UpperCurved Radiator Hose
1980PontiacLaurentian3.8LV6UpperCurved Radiator Hose
1980PontiacLeMans3.8LV6UpperCurved Radiator Hose
Directly replaces or cross-references 26 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 26060XACDelco — 26181XAtlas — MC92Autopar — RH453AutoZone — C1189AutoZone — C1427CARQUEST — 21189Duralast — E71025Freshstart — 173Gates — 21189Gates — 21427Gates — 21822General Motors — 15592591General Motors — 15599361General Motors — 22502037General Motors — 25502037Goodyear — 61087MasterPro — 21189Motorcraft — KM1202NAPA — 7900NAPA — 8127NAPA — 8512Pirelli — 41087Pirelli — 41158Pirelli — 41178Pirelli — 41352