HomeBelts and Cooling > Hoses and PipesDayco 70650 Radiator Coolant Hose - Lower
Part #: 70650

Dayco 70650 Radiator Coolant Hose - Lower

Curved Radiator Hose, Lower
26 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: Oldsmobile, Toronado, 98, Custom Cruiser, Delta 88, Cutlass, Cutlass Supreme, F85, Vista Cruiser, and 442
Easy Returns — Return within 60 days for a full refund
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Overview of Dayco Curved Radiator Hose 70650

The Dayco Curved Radiator Hose 70650 is designed for reliable coolant flow in select Oldsmobile vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a precise fit and long-lasting performance for models like the Oldsmobile Cutlass and Delta 88.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Dual inside diameters: 1 1/2 inch and 1 7/8 inch for specific radiator connections
  • Black color for standard OEM appearance
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Compatible with multiple Oldsmobile models including Cutlass Supreme and Toronado

Detailed Product Description

The Dayco Curved Radiator Hose 70650 is a dual inside diameter hose designed to connect radiator components with differing sizes, featuring 1 1/2 inch and 1 7/8 inch inside diameters on each end. Made from EPDM (ethylene propylene diene monomer), this hose offers resistance to heat, ozone, and coolant chemicals, making it suitable for the cooling systems of older Oldsmobile vehicles. The hose is black in color and does not include a heat shield or protective sleeve, focusing on straightforward, durable construction. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for radiator coolant hoses.

About the Curved Radiator Hose Product Line

The Curved Radiator Hose line from Dayco specializes in hoses designed with specific bends and dual inside diameters to accommodate unique radiator and engine configurations. This product line addresses the need for precise fitment in vehicles where straight hoses are insufficient, providing reliable coolant flow and maintaining system integrity. The 70650 part is a representative example, tailored for select Oldsmobile models requiring a curved hose with two different inside diameters.

Applications and Common Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses in Oldsmobile 98 and Custom Cruiser models
  • Resolving coolant leaks caused by hose degradation or improper fit
  • Addressing overheating issues due to compromised coolant flow
  • Restoring proper coolant circulation in Oldsmobile Cutlass Supreme and Toronado vehicles
  • Ensuring compatibility with radiator connections requiring dual inside diameter hoses

Installation Notes and Tips

  • Verify hose dimensions and fitment with your specific Oldsmobile model before installation
  • Ensure all clamps and connections are secure to prevent leaks
  • Inspect surrounding components for wear or damage during replacement
  • Drain coolant system properly before removing the old hose
  • Check for proper routing to avoid kinks or interference with engine parts

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70650 to meet SAE specifications, ensuring compliance with industry standards for durability and performance. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to maintain reliability in automotive cooling systems.

BrandDayco
Part Number70650
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 1/2
End 2 Inside Diameter1 7/8
Hose TypeDual I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height16

This part fits 26 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1978OldsmobileToronadoLowerCurved Radiator Hose
1977OldsmobileToronadoLowerCurved Radiator Hose
1976OldsmobileToronadoLowerCurved Radiator Hose
1975OldsmobileToronadoLowerCurved Radiator Hose
1974OldsmobileToronado7.5LV8LowerCurved Radiator Hose
1973Oldsmobile987.5LV8LowerCurved Radiator Hose
1973OldsmobileCustom Cruiser7.5LV8LowerCurved Radiator Hose
1973OldsmobileDelta 887.5LV8LowerCurved Radiator Hose
1973OldsmobileDelta 885.7LV8LowerCurved Radiator Hose
1973OldsmobileToronado7.5LV8LowerCurved Radiator Hose
1972Oldsmobile987.5LV8LowerCurved Radiator Hose
1972OldsmobileCustom Cruiser7.5LV8LowerCurved Radiator Hose
1972OldsmobileCutlass7.5LV8LowerCurved Radiator Hose
1972OldsmobileCutlass5.7LV8LowerCurved Radiator Hose
1972OldsmobileCutlass Supreme7.5LV8LowerCurved Radiator Hose
1972OldsmobileCutlass Supreme5.7LV8LowerCurved Radiator Hose
1972OldsmobileDelta 887.5LV8LowerCurved Radiator Hose
1972OldsmobileDelta 885.7LV8LowerCurved Radiator Hose
1971Oldsmobile987.5LV8LowerCurved Radiator Hose
1971OldsmobileCustom Cruiser7.5LV8LowerCurved Radiator Hose
1971OldsmobileCutlass7.5LV8LowerCurved Radiator Hose
1971OldsmobileCutlass5.7LV8LowerCurved Radiator Hose
1971OldsmobileCutlass Supreme7.5LV8LowerCurved Radiator Hose
1971OldsmobileCutlass Supreme5.7LV8LowerCurved Radiator Hose
1971OldsmobileDelta 887.5LV8LowerCurved Radiator Hose
1971OldsmobileDelta 885.7LV8LowerCurved 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:

MC37

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