HomeBelts and Cooling > Hoses and PipesDayco 72401 Radiator Coolant Hose - Upper
Part #: 72401

Dayco 72401 Radiator Coolant Hose - Upper

Curved Radiator Hose, Upper
12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Curved Radiator Hose, Upper
Fitment: Chevrolet, Pontiac, Buick, and Saturn, Uplander, Montana, Terraza, and Relay
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Overview of Dayco Curved Radiator Hose 72401

The Dayco Curved Radiator Hose 72401 is designed to provide reliable coolant flow for select GM vehicles. Engineered with durable EPDM material and a protective sleeve, this radiator coolant hose supports efficient engine cooling in Buick, Chevrolet, Pontiac, and Saturn models.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black color with a protective sleeve for added durability
  • Curved single inside diameter hose with 1 5/16 inch inside diameter ends
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Compatible with Buick Montana, Chevrolet Uplander, Pontiac Relay, and Saturn Terraza

Detailed Product Description

The Dayco Curved Radiator Hose 72401 is part of the Curved Radiator Hose product line, which focuses on delivering precise fitment and reliable performance for cooling system applications. This hose features a curved design to accommodate specific engine layouts, ensuring proper coolant flow without kinks or restrictions. Made from EPDM material, it offers resistance to heat, ozone, and coolant chemicals, extending the hose's service life. The inclusion of a protective sleeve enhances abrasion resistance, protecting the hose from wear caused by engine vibrations and contact with other components.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with several General Motors vehicles, including Buick Montana, Chevrolet Uplander, Pontiac Relay, and Saturn Terraza. It is designed to replace original equipment hoses with matching inside and outside diameters of 1 5/16 inches and 1 11/16 inches respectively, ensuring a secure and leak-free connection.

  • Replaces worn or cracked radiator hoses in Buick Montana and Chevrolet Uplander
  • Restores proper coolant flow in Pontiac Relay and Saturn Terraza cooling systems
  • Prevents coolant leaks caused by hose degradation or damage
  • Helps maintain engine temperature stability by ensuring efficient coolant circulation
  • Addresses issues related to hose swelling, cracking, or collapse

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 72401, ensure the engine is cool to avoid burns. Verify that the hose routing matches the original configuration to prevent kinks or interference with other engine components. Use appropriate clamps to secure both ends of the hose firmly. Inspect adjacent components for wear or damage during installation to maintain overall cooling system integrity.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72401 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The EPDM material and protective sleeve contribute to the hose's durability and resistance to heat and chemicals. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to support reliable performance in automotive cooling systems.

BrandDayco
Part Number72401
PositionCurved Radiator Hose, Upper
ColorBlack
Contains Protective SleeveY
End 1 Inside Diameter1 5/16
End 1 Outside Diameter1 11/16
End 2 Inside Diameter1 5/16
End 2 Outside Diameter1 11/16
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height31

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009ChevroletUplanderUpperCurved Radiator Hose
2009PontiacMontanaUpperCurved Radiator Hose
2008ChevroletUplanderUpperCurved Radiator Hose
2008PontiacMontanaUpperCurved Radiator Hose
2007BuickTerrazaUpperCurved Radiator Hose
2007ChevroletUplanderUpperCurved Radiator Hose
2007PontiacMontanaUpperCurved Radiator Hose
2007SaturnRelayUpperCurved Radiator Hose
2006BuickTerraza3.9LV6UpperCurved Radiator Hose
2006ChevroletUplander3.9LV6UpperCurved Radiator Hose
2006PontiacMontana3.9LV6UpperCurved Radiator Hose
2006SaturnRelay3.9LV6UpperCurved Radiator Hose

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

26549X

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.