Dayco 71689 Radiator Coolant Hose - Upper
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Dayco
 Curved Radiator Hose

Dayco 71689 Radiator Coolant Hose - Upper

Brand Dayco 71689
Position Upper
Color Black
Contains Protective Sleeve Y
End 1 Inside Diameter 1 9/32
End 2 Inside Diameter 1 11/32
Hose Type Dual I.D. Hose
Material EPDM
SAE Specification SAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height 16
Product line Curved Radiator Hose
Fits Buick, Oldsmobile, Pontiac, and Chevrolet · 15 vehicles

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

EPDM construction. Resists heat and coolant exposure for dependable service.

Protective sleeve included. Adds extra abrasion resistance where the hose needs it.

Cross-references ACDelco 26243X, CARQUEST 22057 and Duralast D71689 for the same application. See all 12.

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Dayco Curved Radiator Hose 71689

Dayco 71689 is a curved radiator coolant hose for upper cooling-system routing on select Buick, Oldsmobile, and Pontiac applications. Built from EPDM rubber with a black finish, it uses a dual I.D. hose design and includes a protective sleeve for added abrasion resistance in the engine bay.

This Dayco Curved Radiator Hose line is engineered for direct-fit cooling system service where a formed hose is needed to maintain proper coolant flow and routing. Part number 71689 is specified for upper radiator hose applications on 1994-1998 Buick Skylark, 1994-1998 Oldsmobile Achieva, and 1994-1998 Pontiac Grand Am.

Key Features

  • EPDM construction for coolant hose service
  • Black exterior finish
  • Dual I.D. hose design with 1 9/32 in. end 1 inside diameter and 1 11/32 in. end 2 inside diameter
  • Protective sleeve included for added surface protection
  • Curved radiator hose profile for upper hose routing
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Fitment

  • Fits 1994-1998 Buick Skylark, upper; Curved Radiator Hose
  • Fits 1994-1998 Oldsmobile Achieva, upper; Curved Radiator Hose
  • Fits 1994-1998 Pontiac Grand Am, upper; Curved Radiator Hose

What It Helps Address

  • Cracked or hardened upper radiator hose material
  • Coolant leaks at the hose body or connection points
  • Restricted coolant flow from a deteriorated hose
  • Improper hose routing in the upper cooling circuit
  • Surface wear from engine-bay contact

Installation Notes

Verify hose routing, end diameters, and upper-position fitment before installation. Inspect the radiator neck and engine-side connection points for corrosion, residue, or damage, and replace clamps if they no longer hold securely. Confirm the hose follows the original curved path without twisting so the protective sleeve stays positioned correctly.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for radiator coolant hose service. This part cross-references Gates 22057 for the same application.

Related reading

This part fits 15 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1998BuickSkylark2.4LL4UpperCurved Radiator Hose
1998OldsmobileAchieva2.4LL4UpperCurved Radiator Hose
1998PontiacGrand Am2.4LL4UpperCurved Radiator Hose
1997BuickSkylark2.4LL4UpperCurved Radiator Hose
1997OldsmobileAchieva2.4LL4UpperCurved Radiator Hose
1997PontiacGrand Am2.4LL4UpperCurved Radiator Hose
1996BuickSkylark2.4LL4UpperCurved Radiator Hose
1996OldsmobileAchieva2.4LL4UpperCurved Radiator Hose
1996PontiacGrand Am2.4LL4UpperCurved Radiator Hose
1995BuickSkylark2.3LL4UpperCurved Radiator Hose
1995OldsmobileAchieva2.3LL4UpperCurved Radiator Hose
1995PontiacGrand Am2.3LL4UpperCurved Radiator Hose
1994BuickSkylark2.3LL4UpperCurved Radiator Hose
1994OldsmobileAchieva2.3LL4UpperCurved Radiator Hose
1994PontiacGrand Am2.3LL4UpperCurved Radiator Hose
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 26243XCARQUEST — 22057Duralast — D71689Freshstart — 1016Gates — 22057General Motors — 22579686General Motors — 22579687General Motors — 22595507General Motors — 22645044General Motors — 22645048Goodyear — 62062NAPA — 8740