Dayco
Curved Radiator Hose

Dayco 72172 Radiator Coolant Hose - Lower

Brand Dayco 72172
Position Lower
Color Black
End 1 Inside Diameter 1 9/32
End 2 Inside Diameter 1 9/32
Hose Type Single I.D. Hose
Material EPDM
SAE Specification SAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height 19
Product line Curved Radiator Hose
Fits Saturn · 3 vehicles

EPDM construction. Resists heat and coolant exposure for dependable hose performance.

Single I.D. hose. Provides a straightforward coolant flow path in a curved design.

SAE J20R4 Class D-1. Built to meet recognized coolant hose performance standards.

Cross-references ACDelco 24497L, ACDelco 24581L and CARQUEST 22800 for the same application. See all 13.

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Dayco 72172 Lower Radiator Hose for Saturn Ion

Dayco 72172 is a curved radiator coolant hose built for the lower cooling circuit on select Saturn Ion models. Made from EPDM rubber and finished in black, it follows the OE-style routing needed for a clean, secure coolant connection.

Compatible with 2003-2005 Saturn Ion, lower, this Dayco Curved Radiator Hose supports direct replacement needs for the lower radiator hose location. The 1 9/32-inch inside diameter at both ends and curved single I.D. hose design help match the original application.

Key Features

  • Brand: Dayco Curved Radiator Hose
  • Part number: 72172
  • EPDM construction for cooling-system use
  • Black finish
  • Single I.D. hose design
  • 1 9/32-inch inside diameter at both ends
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Lower radiator hose application for select Saturn Ion models

Product Details

Dayco 72172 is a radiator coolant hose engineered for the lower position on 2003-2005 Saturn Ion vehicles. Its curved shape supports the routing required in the engine bay, while the EPDM material is commonly used in coolant hose applications for resistance to heat and coolant exposure. If you are replacing a worn lower hose on a Saturn Ion, this part number 72172 provides a direct-fit service option for the specified application.

This part cross-references ACDelco 24497L and Gates 22800 for the same application.

Common Problems This Hose Can Address

  • Coolant leaks from a cracked or aged lower radiator hose
  • Softening, swelling, or collapse of the original hose
  • Improper hose routing after a failed replacement
  • Loss of coolant flow through the lower cooling circuit
  • Visible wear from heat, age, or engine-bay exposure

Installation Notes and Tips

Verify the lower hose routing and end diameters before installation. Inspect the hose necks, clamps, and adjoining cooling-system components for wear or corrosion before transferring the new hose into place. Confirm the hose follows the original curved path on the Saturn Ion to avoid kinks or tension at the connection points.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator coolant hose applications. The EPDM construction and OE-style curved form support consistent fitment for the listed Saturn Ion vehicles.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2005SaturnIon2.2LL4LowerCurved Radiator Hose
2004SaturnIon2.2LL4LowerCurved Radiator Hose
2003SaturnIon——LowerCurved Radiator Hose
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 24497LACDelco — 24581LCARQUEST — 22800CARQUEST — 23165Duralast — E72172Gates — 22800Gates — 23165General Motors — 10363794General Motors — 10363795General Motors — 22682481Goodyear — 62587NAPA — 9435NAPA — 9826