HomeBelts and Cooling > Hoses and PipesDayco 70549 Radiator Coolant Hose - Lower
Part #: 70549

Dayco 70549 Radiator Coolant Hose - Lower

Curved Radiator Hose, Lower
34 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Curved Radiator Hose, Lower
Fitment: Ford and Oldsmobile, F-100, F-150, F-350, F-250, 442, 98, Delmont 88, Delta 88, Cutlass, Toronado, Dynamic 88, F85, Jetstar 88, and Vista Cruiser
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Overview of Dayco Curved Radiator Hose 70549

The Dayco Curved Radiator Hose 70549 is designed for reliable coolant flow in select Ford and Oldsmobile vehicles. Engineered with durable EPDM material, this dual inside diameter hose supports efficient engine cooling in models like the Ford F-150 and Oldsmobile Cutlass.

  • Constructed from EPDM for heat and chemical resistance
  • Dual inside diameters: 1 3/4 inch and 2 inch ends
  • Black color for standard OEM appearance
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height of 17 inches for precise fitment

Detailed Product Description

The Dayco Curved Radiator Hose 70549 is a dual inside diameter radiator coolant hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features a curved design with one end measuring 1 3/4 inches inside diameter and the other end 2 inches, allowing it to fit specific radiator connections on vehicles such as the Ford F-100, F-250, and Oldsmobile Delta 88. The black hose does not include a heat shield or protective sleeve but complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses. With a trunk height of 17 inches, it is tailored for proper routing and fitment in the engine bay.

About the Curved Radiator Hose Product Line

The Curved Radiator Hose line by Dayco focuses on providing hoses with precise bends and dual inside diameters to accommodate specific radiator and engine configurations. This product line is engineered to maintain coolant flow efficiency while fitting tightly within the engine compartment, reducing the risk of leaks or hose failure. The 70549 part number is part of this line, designed to meet the cooling system demands of select Ford and Oldsmobile models.

Common Applications and Problem Solving

  • Replacement for cracked or leaking radiator coolant hoses
  • Solves coolant flow restrictions caused by damaged or collapsed hoses
  • Addresses fitment issues in Ford F-150 and Oldsmobile Toronado cooling systems
  • Prevents overheating due to compromised hose integrity
  • Restores proper coolant circulation in Ford F-250 and Oldsmobile Cutlass engines

Installation Notes and Tips

  • Ensure engine is cool before removing the old hose to avoid burns
  • Check hose clamps and radiator fittings for corrosion or damage
  • Verify the correct orientation of the dual inside diameter ends during installation
  • Inspect surrounding components for wear or leaks during replacement
  • Tighten clamps securely but avoid over-tightening to prevent hose damage

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70549 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring durability and performance under typical operating conditions. While specific warranty details are not provided, Dayco products generally adhere to industry quality controls and are backed by the brand's commitment to automotive component reliability.

BrandDayco
Part Number70549
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 3/4
End 2 Inside Diameter2
Hose TypeDual I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height17

This part fits 34 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1975FordF-1005.0LV8Lowerw/A.C., w/o P.S., H.D. Cool; Curved Radiator Hose
1975FordF-1505.0LV8Lowerw/A.C., w/o P.S., H.D. Cool; Curved Radiator Hose
1975FordF-3505.0LV8Lowerw/A.C., w/o P.S., H.D. Cool; Curved Radiator Hose
1974FordF-1005.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1974FordF-100LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1974FordF-2505.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1974FordF-250LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1974FordF-3505.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1974FordF-350LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1973FordF-1005.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1973FordF-100LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1973FordF-2505.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1973FordF-250LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1973FordF-3505.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1973FordF-350LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1972FordF-1005.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1972FordF-100LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1972FordF-2505.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1972FordF-250LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1972FordF-3505.0LV8LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1972FordF-350LowerH.D. Rad., w/o P.S.; Curved Radiator Hose
1968Oldsmobile987.5LV8LowerCurved Radiator Hose
1968OldsmobileDelta 887.5LV8LowerCurved Radiator Hose
1967Oldsmobile98LowerCompatible with vehicles containing air conditioning.; Curved Radiator Hose
1967Oldsmobile98LowerFits vehicles without air conditioning.; Curved Radiator Hose
1967OldsmobileCutlass6.6LV8LowerCurved Radiator Hose
1967OldsmobileDelta 887.0LV8LowerCompatible with vehicles containing air conditioning.; Curved Radiator Hose
1967OldsmobileDelta 887.0LV8LowerFits vehicles without air conditioning.; Curved Radiator Hose
1967OldsmobileToronado7.0LV8Lowerw/A.P.; Curved Radiator Hose
1966Oldsmobile98LowerCurved Radiator Hose
1966OldsmobileCutlass6.6LV8Lowerw/A.P.; Curved Radiator Hose
1966OldsmobileCutlass5.4LV8Lowerw/A.P.; Curved Radiator Hose
1966OldsmobileDelta 88LowerCurved Radiator Hose
1965Oldsmobile98LowerCurved 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:

22041M

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