HomeBelts and Cooling > Hoses and PipesDayco 71972 Radiator Coolant Hose - Lower
Part #: 71972

Dayco 71972 Radiator Coolant Hose - Lower

Curved Radiator Hose, Lower
29 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Curved Radiator Hose, Lower
Fitment: Toyota and Lexus, Avalon, Sienna, Solara, ES300, and Camry
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Durable Radiator Coolant Hose for Lexus and Toyota Vehicles

The Dayco Curved Radiator Hose 71972 is engineered to provide reliable coolant flow for select Lexus and Toyota models. Designed with precision, this radiator coolant hose ensures proper fit and function for vehicles like the Toyota Camry, Avalon, ES300, Sienna, and Solara.

  • Constructed from high-quality EPDM material for heat and chemical resistance
  • Black single inside diameter hose with 1 9/32 inch inside diameter on both ends
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Curved design tailored for specific radiator connections
  • Trunk height of 19 inches for accurate fitment

About the Dayco Curved Radiator Hose Product Line

The Curved Radiator Hose line by Dayco focuses on delivering hoses that match the original equipment specifications for coolant systems. This product line emphasizes precise curvature and material quality to maintain coolant flow integrity and durability under typical engine operating conditions. The 71972 part is a single inside diameter hose designed to fit specific radiator connections without the need for additional modifications.

Product Details and Specifications

This radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in automotive cooling systems. Both ends of the hose have an inside diameter of 1 9/32 inches, ensuring a consistent seal and fit. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator hose. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for coolant applications in Lexus and Toyota vehicles.

Common Applications and Problem Solving

  • Replacement for worn or cracked radiator coolant hoses in Lexus Avalon and Toyota Camry
  • Addresses coolant leaks caused by hose degradation or swelling
  • Prevents overheating issues related to compromised coolant flow
  • Restores proper coolant circulation in Toyota ES300 and Sienna models
  • Suitable for radiator hose replacement in Toyota Solara to maintain engine temperature regulation

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Inspect hose clamps and radiator fittings for corrosion or damage and replace if necessary. The Dayco 71972 hose should slide onto the radiator and engine fittings smoothly; use a lubricant compatible with coolant hoses if needed. Tighten clamps securely to prevent leaks but avoid over-tightening, which can damage the hose.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71972 to meet industry standards for durability and performance. The hose is tested to comply with SAE specifications, ensuring reliable operation in the cooling system. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed quality guarantees. Refer to Dayco’s official documentation for warranty terms.

BrandDayco
Part Number71972
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 9/32
End 2 Inside Diameter1 9/32
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height19

This part fits 29 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004ToyotaAvalonLowerCurved Radiator Hose
2003ToyotaAvalonLowerCurved Radiator Hose
2003ToyotaSiennaLowerCurved Radiator Hose
2003ToyotaSolara3.0LV6LowerCurved Radiator Hose
2002ToyotaAvalonLowerCurved Radiator Hose
2002ToyotaSiennaLowerCurved Radiator Hose
2002ToyotaSolara3.0LV6LowerCurved Radiator Hose
2001LexusES300LowerCurved Radiator Hose
2001ToyotaAvalonLowerCurved Radiator Hose
2001ToyotaCamry3.0LV6LowerCurved Radiator Hose
2001ToyotaSiennaLowerCurved Radiator Hose
2001ToyotaSolara3.0LV6LowerCurved Radiator Hose
2000LexusES300LowerCurved Radiator Hose
2000ToyotaAvalonLowerCurved Radiator Hose
2000ToyotaCamry3.0LV6LowerCurved Radiator Hose
2000ToyotaSiennaLowerCurved Radiator Hose
2000ToyotaSolara3.0LV6LowerCurved Radiator Hose
1999LexusES300LowerCurved Radiator Hose
1999ToyotaAvalonLowerCurved Radiator Hose
1999ToyotaCamry3.0LV6LowerCurved Radiator Hose
1999ToyotaSiennaLowerCurved Radiator Hose
1999ToyotaSolara3.0LV6LowerCurved Radiator Hose
1998LexusES300LowerCurved Radiator Hose
1998ToyotaAvalonLowerCurved Radiator Hose
1998ToyotaCamry3.0LV6LowerCurved Radiator Hose
1998ToyotaSiennaLowerCurved Radiator Hose
1997LexusES300LowerCurved Radiator Hose
1997ToyotaAvalonLowerCurved Radiator Hose
1997ToyotaCamry3.0LV6LowerCurved 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:

24366L

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