HomeBelts and Cooling > Hoses and PipesDayco 72303 Radiator Coolant Hose - Lower, Lower - Pipe To Radiator or Upper
Part #: 72303

Dayco 72303 Radiator Coolant Hose - Lower, Lower - Pipe To Radiator or Upper

Curved Radiator Hose, Lower
⚙️ 39 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Curved Radiator Hose, Lower
🚗Fitment: Nissan, Toyota, and INFINITI, Armada, Titan, Tundra, QX56, and Pathfinder Armada
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Dayco Curved Radiator Hose 72303

The Dayco Curved Radiator Hose 72303 is designed for reliable coolant flow in select Nissan, Infiniti, and Toyota vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black single inside diameter hose with 1 5/16 inch ends
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Curved design tailored for specific radiator connections
  • Compatible with Nissan Armada, Pathfinder Armada, QX56, Titan, and Toyota Tundra

Detailed Product Description

The Dayco Curved Radiator Hose 72303 is part of the Curved Radiator Hose product line, which focuses on delivering precise fit and durability for radiator coolant systems. This hose features a single inside diameter of 1 5/16 inches on both ends, ensuring a secure and leak-resistant connection. Made from EPDM (ethylene propylene diene monomer), the hose offers excellent resistance to heat, ozone, and coolant chemicals, making it suitable for extended use in automotive cooling systems. The black color and curved shape facilitate installation in tight engine compartments without compromising coolant flow.

Compatible Vehicles and Applications

  • Designed for use in Nissan Armada and Pathfinder Armada models
  • Compatible with Infiniti QX56
  • Fits Nissan Titan and Toyota Tundra trucks
  • Ideal for radiator coolant system repairs and replacements
  • Addresses issues related to coolant leaks and hose deterioration

Installation Notes and Tips

  • Ensure the engine is cool before removing the old radiator hose
  • Check hose clamps and radiator fittings for wear or damage
  • Verify the hose orientation matches the curved design for proper fit
  • Use appropriate tools to avoid damaging the hose during installation
  • Inspect coolant levels and system pressure after installation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72303 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for radiator coolant hoses. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to maintain reliability and performance in automotive cooling systems.

BrandDayco
Part Number72303
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 5/16
End 2 Inside Diameter1 5/16
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height15

This part fits 39 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2015NissanArmadaLowerCurved Radiator Hose
2015NissanTITANLowerCurved Radiator Hose
2014NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2014NissanTITANLowerCurved Radiator Hose
2014ToyotaTundra4.0LV6UpperCurved Radiator Hose
2013NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2013NissanTITANLowerCurved Radiator Hose
2013ToyotaTundra4.0LV6UpperCurved Radiator Hose
2012NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2012NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2012ToyotaTundra4.0LV6UpperCurved Radiator Hose
2011NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2011NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2011ToyotaTundra4.0LV6UpperCurved Radiator Hose
2010INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2010NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2010NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2010ToyotaTundra4.0LV6UpperCurved Radiator Hose
2009INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2009NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2009NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2009ToyotaTundra4.0LV6UpperCurved Radiator Hose
2008INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2008NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2008NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2008ToyotaTundra4.0LV6UpperCurved Radiator Hose
2007INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2007NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2007NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2007ToyotaTundra4.0LV6UpperCurved Radiator Hose
2006INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2006NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2006NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2005INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2005NissanArmadaLower - Pipe To RadiatorCurved Radiator Hose
2005NissanTITANLower - Pipe To RadiatorCurved Radiator Hose
2004INFINITIQX56Lower - Pipe To RadiatorCurved Radiator Hose
2004NissanPathfinder ArmadaLower - Pipe To RadiatorCurved Radiator Hose
2004NissanTITANLower - Pipe To RadiatorCurved 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:

22593M

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