HomeBelts and Cooling > Hoses and PipesDayco 71840 Radiator Coolant Hose - Upper
Part #: 71840

Dayco 71840 Radiator Coolant Hose - Upper

Curved Radiator Hose, Upper
22 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, Upper
Fitment: Ford and Mercury, Taurus and Sable
Easy Returns — Return within 60 days for a full refund
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Overview of Dayco Curved Radiator Hose 71840

The Dayco Curved Radiator Hose 71840 is designed specifically for Ford and Mercury vehicles, including the Sable and Taurus models. This radiator coolant hose features a curved design and is constructed from durable EPDM material to ensure reliable performance in cooling systems.

  • Made from EPDM material for heat and chemical resistance
  • Black color with a protective sleeve for added durability
  • Single inside diameter hose with 1 1/2 inch ends on both sides
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Compatible with Ford Sable and Taurus, Mercury Sable and Taurus models

Detailed Product Description

The Dayco Curved Radiator Hose 71840 is part of the Curved Radiator Hose product line, which focuses on providing hoses with precise bends to fit specific vehicle cooling system layouts. This hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in automotive cooling systems. The hose features a black finish and includes a protective sleeve to guard against abrasion and external damage, although it does not contain a heat shield. Both ends of the hose have an inside diameter of 1 1/2 inches, designed as a single inside diameter hose to ensure a secure and leak-free connection.

Applications and Common Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses in Ford and Mercury Sable and Taurus vehicles
  • Prevention of coolant leaks caused by hose degradation or damage
  • Maintaining proper coolant flow to avoid engine overheating
  • Addressing hose failures due to abrasion or external wear
  • Ensuring compatibility with factory cooling system specifications

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71840, ensure the vehicle is cool and the cooling system is depressurized. Verify that the hose ends match the 1 1/2 inch inside diameter fittings on the vehicle. Use appropriate clamps to secure the hose and check for any signs of twisting or kinking during installation. The protective sleeve should be positioned to face areas prone to abrasion. After installation, refill and bleed the cooling system as needed and inspect for leaks during engine warm-up.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71840 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for radiator coolant hoses. The use of EPDM material and protective sleeve enhances durability and resistance to common cooling system stresses. Warranty information is provided by Dayco and typically covers defects in material and workmanship; please refer to Dayco's official warranty policy for specific terms.

BrandDayco
Part Number71840
PositionCurved Radiator Hose, Upper
ColorBlack
Contains Protective SleeveY
End 1 Inside Diameter1 1/2
End 2 Inside Diameter1 1/2
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height18

This part fits 22 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007FordTaurusUpperCurved Radiator Hose
2006FordTaurusUpperCurved Radiator Hose
2005FordTaurus3.0LV6UpperCurved Radiator Hose
2005MercurySable3.0LV6UpperCurved Radiator Hose
2004FordTaurus3.0LV6UpperCurved Radiator Hose
2004MercurySable3.0LV6UpperCurved Radiator Hose
2003FordTaurus3.0LV6UpperCurved Radiator Hose
2003MercurySable3.0LV6UpperCurved Radiator Hose
2002FordTaurus3.0LV6UpperCurved Radiator Hose
2002MercurySable3.0LV6UpperCurved Radiator Hose
2001FordTaurus3.0LV6UpperCurved Radiator Hose
2001MercurySable3.0LV6UpperCurved Radiator Hose
2000FordTaurus3.0LV6UpperCurved Radiator Hose
2000MercurySable3.0LV6UpperCurved Radiator Hose
1999FordTaurus3.0LV6UpperCurved Radiator Hose
1999MercurySable3.0LV6UpperCurved Radiator Hose
1998FordTaurus3.0LV6UpperCurved Radiator Hose
1998MercurySable3.0LV6UpperCurved Radiator Hose
1997FordTaurus3.0LV6UpperCurved Radiator Hose
1997MercurySable3.0LV6UpperCurved Radiator Hose
1996FordTaurus3.0LV6UpperCurved Radiator Hose
1996MercurySable3.0LV6UpperCurved 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:

24346L

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