HomeBelts and Cooling > Hoses and PipesDayco 71966 Radiator Coolant Hose - Lower
Part #: 71966

Dayco 71966 Radiator Coolant Hose - Lower

Curved Radiator Hose, Lower
15 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Curved Radiator Hose, Lower
Fitment: Ford, E-150, E-150 Club Wagon, E-250, E-150 Econoline, and E-150 Econoline Club Wagon
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Overview of Dayco Curved Radiator Hose 71966

The Dayco Curved Radiator Hose 71966 is designed for reliable coolant flow in select Ford vehicles. Engineered with durable EPDM material, this branched radiator coolant hose ensures consistent performance in Ford E-150, E-150 Club Wagon, E-150 Econoline, E-150 Econoline Club Wagon, and E-250 models.

  • Constructed from heat-resistant EPDM material for durability
  • Branched hose design with three different inside diameters for precise fit
  • Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Black color for standard OEM appearance
  • Compatible with multiple Ford E-Series models

Detailed Product Description

The Dayco Curved Radiator Hose 71966 is a branched radiator coolant hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features three inside diameters: 1 23/32 inches on both End 1 and End 2, and 31/32 inches on End 3, allowing it to connect multiple points within the cooling system efficiently. The outside diameters of End 1 and End 2 measure 2 1/16 inches, ensuring a secure fit with corresponding radiator and engine components. The hose has a trunk height of 25, designed to accommodate the specific routing requirements of Ford E-150 and E-250 series vehicles. It does not include a heat shield or protective sleeve, consistent with OEM specifications for this part number.

The Curved Radiator Hose product line by Dayco focuses on delivering hoses that match the original equipment's shape and material standards, providing reliable coolant flow and system integrity. This hose is engineered to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, which define performance criteria for coolant hoses in automotive applications.

Compatible Vehicles and Applications

  • Ford E-150
  • Ford E-150 Club Wagon
  • Ford E-150 Econoline
  • Ford E-150 Econoline Club Wagon
  • Ford E-250

This hose is specifically designed for use in the cooling systems of these Ford models, ensuring proper coolant circulation and temperature regulation.

Common Issues Addressed by Dayco Radiator Hose 71966

  • Replacement of cracked or leaking radiator coolant hoses
  • Restoring proper coolant flow to prevent engine overheating
  • Fixing coolant hose failures due to material degradation
  • Resolving coolant leaks caused by improper hose fit or damage
  • Maintaining OEM cooling system performance in Ford E-Series vehicles

Installation Notes and Tips

  • Ensure the engine is cool before removing the old radiator hose
  • Check all hose connections and clamps for wear and replace if necessary
  • Verify the hose routing matches OEM specifications to avoid kinks or interference
  • Use appropriate coolant compatible with EPDM hoses
  • Inspect the cooling system for leaks after installation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71966 to meet strict SAE standards, ensuring durability and performance under typical operating conditions. While specific warranty details are not provided here, Dayco products generally come with manufacturer-backed quality assurance to support reliable service life when installed correctly and maintained according to vehicle manufacturer guidelines.

BrandDayco
Part Number71966
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 23/32
End 1 Outside Diameter2 1/16
End 2 Inside Diameter1 23/32
End 2 Outside Diameter2 1/16
End 3 Inside Diameter31/32
Hose TypeBranched Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height25

This part fits 15 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2003FordE-1504.6LV8Lowerw/o Oil Cooler; Curved Radiator Hose
2003FordE-150 Club Wagon4.6LV8Lowerw/o Oil Cooler; Curved Radiator Hose
2003FordE-2504.6LV8Lowerw/o Oil Cooler; Curved Radiator Hose
2002FordE-150 Econoline4.6LV8LowerCurved Radiator Hose
2002FordE-150 Econoline Club Wagon4.6LV8LowerCurved Radiator Hose
2001FordE-150 Econoline4.6LV8LowerCurved Radiator Hose
2001FordE-150 Econoline Club Wagon4.6LV8LowerCurved Radiator Hose
2000FordE-150 Econoline4.6LV8LowerCurved Radiator Hose
2000FordE-150 Econoline Club Wagon4.6LV8LowerCurved Radiator Hose
1999FordE-150 Econoline4.6LV8LowerCurved Radiator Hose
1999FordE-150 Econoline Club Wagon4.6LV8LowerCurved Radiator Hose
1998FordE-150 Econoline4.6LV8LowerCurved Radiator Hose
1998FordE-150 Econoline Club Wagon4.6LV8LowerCurved Radiator Hose
1997FordE-150 Econoline4.6LV8LowerCurved Radiator Hose
1997FordE-150 Econoline Club Wagon4.6LV8LowerCurved 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:

26377X

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