Dayco 72347 Radiator Coolant Hose - Upper
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Dayco
 Curved Radiator Hose

Dayco 72347 Radiator Coolant Hose - Upper

Brand Dayco 72347
Position Upper
Color Black
End 1 Inside Diameter 1 3/4
End 2 Inside Diameter 1 3/4
Hose Type Single I.D. Hose
Material EPDM
SAE Specification SAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height 18
Product line Curved Radiator Hose
Fits Chevrolet and GMC · 24 vehicles

Curved radiator hose. EPDM construction helps resist heat and coolant exposure.

Single I.D. hose. Uniform inside diameter supports a consistent coolant flow path.

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

Cross-references ACDelco 24589L, ACDelco 24655L and CARQUEST 23227 for the same application. See all 13.

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Not what you need? See all Radiator Coolant Hose options

Dayco Curved Radiator Hose 72347

Dayco 72347 is a curved upper radiator coolant hose for heavy-duty GM trucks that need a direct-fit replacement in the cooling system. Built from EPDM rubber and formed with a single I.D. hose design, it matches the routing and connection size required for select Chevrolet Silverado HD and GMC Sierra HD applications.

Key Features

  • EPDM construction for coolant-system durability
  • Black finish for a clean OE-style appearance
  • 1 3/4 in. inside diameter at both ends
  • Single I.D. hose design for upper radiator routing
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Curved radiator hose profile for the specified GM truck applications

Product Details

This Dayco curved radiator hose is engineered for upper radiator use on 2006-2010 Chevrolet Silverado 2500 HD, 2007-2010 Chevrolet Silverado 3500 HD, 2006-2010 GMC Sierra 2500 HD, and 2007-2010 GMC Sierra 3500 HD applications, along with select 2006-2007 classic and 2006-2007 3500 models. The 72347 part number is also referenced in aftermarket catalogs under common interchange numbers, including Duralast E72347 and NAPA 9908. Its EPDM rubber construction is suited for coolant exposure and temperature cycling in demanding truck cooling systems.

What It Helps Address

  • Cracked or hardened upper radiator hose material
  • Coolant leaks at the hose connection points
  • Restricted coolant flow caused by hose collapse or deterioration
  • Improper hose routing on replacement cooling repairs
  • Service issues on Chevrolet Silverado HD and GMC Sierra HD upper radiator hose applications

Installation Notes and Tips

Verify end diameters, routing, and position before installation. This hose is specified as an upper radiator hose with 1 3/4 in. inside diameter at both ends, so confirm the vehicle’s original hose path and connection size match the application. Inspect adjoining radiator necks, thermostat housing connections, and clamps for wear before completing the repair.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator coolant hose service. The part number is 72347.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2010ChevroletSilverado 2500 HD6.6LV8UpperCurved Radiator Hose
2010ChevroletSilverado 3500 HD6.6LV8UpperCurved Radiator Hose
2010GMCSierra 2500 HD6.6LV8UpperCurved Radiator Hose
2010GMCSierra 3500 HD6.6LV8UpperCurved Radiator Hose
2009ChevroletSilverado 2500 HD6.6LV8UpperCurved Radiator Hose
2009ChevroletSilverado 3500 HD6.6LV8UpperCurved Radiator Hose
2009GMCSierra 2500 HD6.6LV8UpperCurved Radiator Hose
2009GMCSierra 3500 HD6.6LV8UpperCurved Radiator Hose
2008ChevroletSilverado 2500 HD6.6LV8UpperCurved Radiator Hose
2008ChevroletSilverado 3500 HD6.6LV8UpperCurved Radiator Hose
2008GMCSierra 2500 HD6.6LV8UpperCurved Radiator Hose
2008GMCSierra 3500 HD6.6LV8UpperCurved Radiator Hose
2007ChevroletSilverado 2500 HD6.6LV8UpperCurved Radiator Hose
2007ChevroletSilverado 2500 HD Classic6.6LV8UpperCurved Radiator Hose
2007ChevroletSilverado 3500 Classic6.6LV8UpperCurved Radiator Hose
2007ChevroletSilverado 3500 HD6.6LV8UpperCurved Radiator Hose
2007GMCSierra 2500 HD6.6LV8UpperCurved Radiator Hose
2007GMCSierra 2500 HD Classic6.6LV8UpperCurved Radiator Hose
2007GMCSierra 3500 Classic6.6LV8UpperCurved Radiator Hose
2007GMCSierra 3500 HD6.6LV8UpperCurved Radiator Hose
2006ChevroletSilverado 2500 HD6.6LV8UpperCurved Radiator Hose
2006ChevroletSilverado 35006.6LV8UpperCurved Radiator Hose
2006GMCSierra 2500 HD6.6LV8UpperCurved Radiator Hose
2006GMCSierra 35006.6LV8UpperCurved 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 — 24589LACDelco — 24655LCARQUEST — 23227CARQUEST — 23499Duralast — E72347Gates — 23227Gates — 23499General Motors — 15102154General Motors — 15792824General Motors — 25833204Goodyear — 66118NAPA — 9908NAPA — 16325