HomeBelts and Cooling > Hoses and PipesDayco 73101 Radiator Coolant Hose - Lower
Part #: 73101

Dayco 73101 Radiator Coolant Hose - Lower

Curved Radiator Hose, Lower
10 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: BMW, X6 and X5
Easy Returns — Return within 60 days for a full refund
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Overview of Dayco Curved Radiator Hose 73101

The Dayco Curved Radiator Hose 73101 is designed specifically for BMW X5 and X6 models, providing reliable coolant flow management. Constructed from durable EPDM material, this branched radiator coolant hose ensures consistent performance under demanding engine conditions.

  • Material: High-quality EPDM for heat and chemical resistance
  • Color: Black
  • Branched hose design with three ends
  • End 1 and End 2 inside and outside diameter: 1 7/16 inches
  • End 3 inside and outside diameter: 7/8 inches
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height: 11 inches
  • Compatible with BMW X5 and X6 models

Detailed Product Description

The Dayco Curved Radiator Hose 73101 is engineered to meet the cooling system requirements of BMW X5 and X6 vehicles. Made from EPDM (ethylene propylene diene monomer), this hose offers excellent resistance to heat, ozone, and coolant chemicals, ensuring durability and longevity. The branched hose design features three connection points with precise inside and outside diameters—1 7/16 inches for the first two ends and 7/8 inches for the third—allowing for a secure fit within the vehicle's cooling system.

This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant applications. The 11-inch trunk height provides the necessary length and curvature to fit the specific routing requirements of BMW X5 and X6 radiator systems.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on delivering hoses with precise bends and branched configurations to accommodate complex cooling system layouts. This product line is designed to maintain coolant flow efficiency while fitting tightly within engine compartments, reducing the risk of kinks or leaks. The 73101 part exemplifies this approach by combining material quality with a tailored shape for BMW applications.

Common Applications and Problem Solving

  • Replacement of worn or cracked radiator coolant hoses in BMW X5 and X6
  • Resolving coolant leaks caused by hose degradation
  • Preventing overheating due to compromised coolant flow
  • Addressing fitment issues with original equipment hoses
  • Maintaining proper coolant circulation in branched radiator systems

Installation Notes and Tips

  • Ensure the engine is cool before removing the old hose to avoid burns
  • Check all hose connections and clamps for wear and replace if necessary
  • Verify the correct orientation of the branched hose during installation
  • Use proper tools to avoid damaging hose ends or radiator fittings
  • Inspect the cooling system for leaks after installation and during initial operation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 73101 to meet stringent SAE specifications, ensuring reliable performance in BMW X5 and X6 cooling systems. While specific warranty details are not provided, Dayco products typically adhere to industry standards for durability and quality. Users should consult product documentation or authorized sources for warranty information.

BrandDayco
Part Number73101
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 7/16
End 1 Outside Diameter1 7/16
End 2 Inside Diameter1 7/16
End 2 Outside Diameter1 7/16
End 3 Inside Diameter7/8
End 3 Outside Diameter7/8
Hose TypeBranched Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height11

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2014BMWX63.0LL6LowerCurved Radiator Hose
2013BMWX53.0LL6LowerCurved Radiator Hose
2013BMWX63.0LL6LowerCurved Radiator Hose
2012BMWX53.0LL6LowerCurved Radiator Hose
2012BMWX63.0LL6LowerCurved Radiator Hose
2011BMWX53.0LL6LowerCurved Radiator Hose
2011BMWX63.0LL6LowerCurved Radiator Hose
2010BMWX63.0LL6LowerCurved Radiator Hose
2009BMWX63.0LL6LowerCurved Radiator Hose
2008BMWX63.0LL6LowerCurved 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:

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