Dayco 72588 Radiator Coolant Hose - Lower
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Dayco
 Curved Radiator Hose

Dayco 72588 Radiator Coolant Hose - Lower

Brand Dayco 72588
Position Lower
Color Black
Contains Protective Sleeve Y
End 1 Inside Diameter 1 3/8
End 1 Outside Diameter 1 23/32
End 2 Inside Diameter 1 3/8
End 2 Outside Diameter 1 23/32
Hose Type Single I.D. Hose
Material EPDM
SAE Specification SAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height 22
Product line Curved Radiator Hose
Fits Kia · 9 vehicles

Curved hose design. Helps route coolant smoothly with a cleaner, more direct fit.

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

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

Cross-references ACDelco 26591X, CARQUEST 23316 and Duralast E72588 for the same application. See all 8.

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Not what you need? See all Radiator Coolant Hose options

Dayco Curved Radiator Hose 72588

Dayco 72588 is a curved radiator coolant hose built for lower cooling-system routing on select Kia applications. It uses EPDM construction with a black finish and a protective sleeve to support durability in demanding engine-bay conditions.

Key Features

  • EPDM rubber construction for coolant hose service
  • Curved radiator hose design for lower hose routing
  • Black exterior with protective sleeve
  • Single I.D. hose design
  • End 1 inside diameter: 1 3/8 in.; End 2 inside diameter: 1 3/8 in.
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Product Details

This Dayco curved radiator hose is engineered for lower radiator coolant flow and is sized with matching 1 3/8-inch inside diameters at both ends. The EPDM material is commonly used in cooling-system hose applications for its resistance to heat and coolant exposure, while the included protective sleeve adds an extra layer where routing passes near engine components. Dayco 72588 is a direct-fit style replacement for select Kia Rondo, Kia Magentis, and Kia Optima lower radiator hose applications.

Compatible vehicle coverage includes Fits 2007-2010 Kia Rondo, Lower; Fits 2007-2008 Kia Magentis, Lower; and Fits 2006-2008 Kia Optima, Lower. This part cross-references ACDelco 26591X and Gates 23316 for the same application.

Common Replacement Reasons

  • Cracked or hardened lower radiator hose
  • Coolant seepage at the hose body or ends
  • Soft spots, swelling, or hose collapse
  • Incorrect hose shape or routing on Kia cooling-system repairs
  • Replacement after cooling-system service on Kia Rondo, Magentis, or Optima

Installation Notes

Verify hose routing, end diameters, and lower-position fitment before installation. Inspect clamps, necks, and adjoining cooling-system components for wear or corrosion before transferring the hose into service. Confirm the hose follows the original curved path without twist or tension so coolant flow and clearance remain correct.

Quality Assurance

Dayco manufactures cooling-system hoses to published SAE specifications, including SAE J20R4 Class D-1 and SAE J1684 Type EC for this part.

Related reading

This part fits 9 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2010KiaRondo2.4LL4LowerCurved Radiator Hose
2009KiaRondo2.4LL4LowerCurved Radiator Hose
2008KiaMagentis2.4LL4LowerCurved Radiator Hose
2008KiaOptima2.4LL4LowerCurved Radiator Hose
2008KiaRondo2.4LL4LowerCurved Radiator Hose
2007KiaMagentis2.4LL4LowerCurved Radiator Hose
2007KiaOptima2.4LL4LowerCurved Radiator Hose
2007KiaRondo2.4LL4LowerCurved Radiator Hose
2006KiaOptima2.4LL4LowerCurved Radiator Hose
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 26591XCARQUEST — 23316Duralast — E72588Gates — 23316Goodyear — 66278Kia — 25412-2G100Kia — 25415-1D100NAPA — 16053