HomeBelts and Cooling > Hoses and PipesDayco 71158 Radiator Coolant Hose - Upper
Part #: 71158

Dayco 71158 Radiator Coolant Hose - Upper

Curved Radiator Hose, Upper
⚙️ 24 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Curved Radiator Hose, Upper
🚗Fitment: Ford and Mercury, Thunderbird, Cougar, LTD, Mustang, Capri, and Marquis
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dayco Curved Radiator Hose 71158

The Dayco Curved Radiator Hose 71158 is designed for reliable cooling system performance in select Ford and Mercury vehicles. Engineered with durable EPDM material and a dual inside diameter design, this radiator coolant hose supports efficient heat transfer and fluid flow.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black color with protective sleeve for added durability
  • Dual inside diameter hose: 1 1/4 inch and 1 1/2 inch ends
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Compatible with Ford and Mercury models including Capri, Cougar, LTD, Marquis, Mustang, and Thunderbird

Detailed Product Description

The Dayco Curved Radiator Hose 71158 is part of the Curved Radiator Hose product line, which focuses on providing hoses with precise bends to fit specific vehicle cooling systems. This hose features a dual inside diameter design, with one end measuring 1 1/4 inches and the other 1 1/2 inches, allowing for a secure fit on varying radiator and engine connections. Made from EPDM material, it offers resistance to heat, ozone, and coolant chemicals, ensuring long service life. The hose includes a protective sleeve to guard against abrasion and external damage, although it does not contain a heat shield. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant applications.

Compatible Vehicles and Applications

  • Ford Capri
  • Ford Cougar
  • Ford LTD
  • Ford Marquis
  • Ford Mustang
  • Ford Thunderbird
  • Mercury Capri
  • Mercury Cougar
  • Mercury Marquis

This radiator coolant hose is designed to replace worn or damaged hoses in the cooling system, helping to maintain proper engine temperature and prevent leaks.

Common Issues Addressed by Dayco Radiator Hose 71158

  • Coolant leaks due to cracked or brittle hoses
  • Overheating caused by restricted coolant flow
  • Hose collapse or deformation under pressure
  • Wear from abrasion or external damage
  • Compatibility issues with incorrect hose diameters

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose. Verify the hose ends match the required inside diameters of 1 1/4 inch and 1 1/2 inch for proper fitment. Use appropriate clamps to secure the hose and check for leaks after installation. The protective sleeve on this hose helps prevent abrasion, but care should be taken to avoid contact with sharp edges during installation.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71158 to meet SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry standards for durability and reliability in automotive cooling systems.

BrandDayco
Part Number71158
PositionCurved Radiator Hose, Upper
ColorBlack
Contains Protective SleeveY
End 1 Inside Diameter1 1/4
End 2 Inside Diameter1 1/2
Hose TypeDual I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height23

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1987FordThunderbird3.8LV6UpperCurved Radiator Hose
1987MercuryCougar3.8LV6UpperCurved Radiator Hose
1986FordLTD3.8LV6UpperCurved Radiator Hose
1986FordMustang3.8LV6UpperCurved Radiator Hose
1986FordThunderbird3.8LV6UpperCurved Radiator Hose
1986MercuryCapri3.8LV6UpperCurved Radiator Hose
1986MercuryCougar3.8LV6UpperCurved Radiator Hose
1986MercuryMarquis3.8LV6UpperCurved Radiator Hose
1985FordLTD3.8LV6UpperCurved Radiator Hose
1985FordMustang3.8LV6UpperCurved Radiator Hose
1985FordThunderbird3.8LV6UpperCurved Radiator Hose
1985MercuryCapri3.8LV6UpperCurved Radiator Hose
1985MercuryCougar3.8LV6UpperCurved Radiator Hose
1985MercuryMarquis3.8LV6UpperCurved Radiator Hose
1984FordLTD3.8LV6UpperCurved Radiator Hose
1984FordMustang3.8LV6UpperCurved Radiator Hose
1984FordThunderbird3.8LV6UpperCurved Radiator Hose
1984MercuryCapri3.8LV6UpperCurved Radiator Hose
1984MercuryCougar3.8LV6UpperCurved Radiator Hose
1984MercuryMarquis3.8LV6UpperCurved Radiator Hose
1983FordLTD3.8LV6UpperCurved Radiator Hose
1983FordThunderbird3.8LV6UpperCurved Radiator Hose
1983MercuryCougar3.8LV6UpperCurved Radiator Hose
1983MercuryMarquis3.8LV6UpperCurved 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:

26089X

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