Dayco 72309 Radiator Coolant Hose - Lower
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Dayco
 Curved Radiator Hose

Dayco 72309 Radiator Coolant Hose - Lower

Brand Dayco 72309
Position Lower
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 Y
Hose Type Single i.d. hose
SAE Specification Sae j20r4 class d-1, sae j1684 type ec
Trunk Height 26-1/2
Product line Curved Radiator Hose
Fits Volkswagen · 12 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 protection where the hose needs it most.

Cross-references ACDelco 26383X, CARQUEST 22566 and Duralast E72309 for the same application. See all 6.

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Dayco Curved Radiator Hose 72309

Dayco 72309 is a curved radiator coolant hose for select Volkswagen cooling system applications. Built from EPDM and finished in black, it uses a single I.D. hose design with a protective sleeve to help manage routing and abrasion in the engine bay.

Compatible with 1999-2004 Volkswagen Golf lower radiator hose applications and 1999-2004 Volkswagen Jetta lower radiator hose applications without Quick Connect, this hose is a direct-fit cooling system service part for the VW Golf and Jetta platform.

Key Features

  • EPDM construction for coolant hose service
  • Black finish for OE-style appearance
  • 1 1/4 in. inside diameter at both ends
  • Single I.D. hose design
  • Protective sleeve included
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Curved radiator hose layout for lower cooling system routing

Product Details

The Dayco Curved Radiator Hose line is built for vehicle-specific cooling system routing where a formed hose is needed to connect the radiator and engine-side coolant passages. Part number 72309 uses EPDM rubber for heat and coolant exposure, with a protective sleeve to add durability in routed areas. This hose cross-references ACDelco 26383X and Gates 22566 for the same application.

Fits 1999-2004 Volkswagen Golf, lower. Fits 1999-2004 Volkswagen Jetta, lower. For Volkswagen Golf and Volkswagen Jetta cooling system service, 72309 provides the correct curved profile for the lower hose position on vehicles without Quick Connect.

Common Replacement Reasons

  • Cracked or hardened lower radiator hose
  • Coolant seepage at the hose body
  • Swelling, soft spots, or hose collapse
  • Incorrect hose routing after cooling system repair
  • Replacement during radiator, thermostat, or water pump service

Installation Notes

Verify the vehicle uses the lower hose configuration without Quick Connect before installation. Match the 1 1/4 in. end diameters and confirm routing against the original hose shape. Inspect clamps, necks, and adjacent cooling components for wear before reassembly.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for coolant hose service. Part number 72309 is built for the stated Volkswagen Golf and Jetta applications and follows the dimensional and material requirements listed above.

Related reading

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2004VolkswagenGolf1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2004VolkswagenJetta1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2003VolkswagenGolf1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2003VolkswagenJetta1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2002VolkswagenGolf1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2002VolkswagenJetta1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2001VolkswagenGolf1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2001VolkswagenJetta1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2000VolkswagenGolf1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
2000VolkswagenJetta1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
1999VolkswagenGolf1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
1999VolkswagenJetta1.9LL4LowerFitment note: without Quick Connect; Curved Radiator Hose
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 26383XCARQUEST — 22566Duralast — E72309Gates — 22566Goodyear — 62779NAPA — 9199