HomeBelts and Cooling > Hoses and PipesDayco 70871 Radiator Coolant Hose - Upper
Part #: 70871

Dayco 70871 Radiator Coolant Hose - Upper

Curved Radiator Hose, Upper
28 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Curved Radiator Hose, Upper
Fitment: Ford, Bronco, F-100, F-150, F-250, and F-350
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 70871

The Dayco Curved Radiator Hose 70871 is designed for reliable coolant flow in Ford trucks and SUVs. Engineered with durable EPDM material, this dual inside diameter hose supports efficient cooling system performance in Ford Bronco, F-100, F-150, F-250, and F-350 models.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Dual inside diameters: 1 1/2 inch and 1 3/4 inch ends for precise fit
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Black color for standard OEM appearance
  • Trunk height of 16 inches for proper routing in engine bay

Detailed Product Description

The Dayco Curved Radiator Hose 70871 is a dual inside diameter hose specifically designed to maintain optimal coolant flow in Ford vehicles. Made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, this hose ensures durability and longevity under demanding engine conditions. The hose features a 1 1/2 inch inside diameter on one end and a 1 3/4 inch inside diameter on the other, allowing for a secure and precise connection between radiator and engine components. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive cooling systems. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator coolant hose.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and dual inside diameters to accommodate various radiator and engine configurations. This product line is engineered to meet OEM specifications for fit and function, ensuring compatibility with multiple Ford truck and SUV models. The 70871 part is a representative example, offering a tailored fit for Ford Bronco and F-Series trucks, supporting efficient coolant circulation and system reliability.

Common Applications and Problem Solving

  • Replacement of worn or cracked radiator coolant hoses in Ford Bronco and F-Series trucks
  • Resolving coolant leaks caused by hose degradation or improper fit
  • Addressing overheating issues due to restricted or collapsed hoses
  • Upgrading OEM hoses with a durable EPDM construction for extended service life
  • Ensuring proper coolant flow with dual inside diameter design for specific engine setups

Installation Notes and Tips

  • Verify hose dimensions and fitment with your specific Ford 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 safely before removing the old hose
  • Check for proper routing to avoid kinks or interference with other engine parts

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70871 to meet stringent SAE specifications, ensuring reliable performance in automotive cooling systems. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and durability. Using this hose helps maintain the integrity of the cooling system in compatible Ford Bronco and F-Series trucks.

BrandDayco
Part Number70871
PositionCurved Radiator Hose, Upper
ColorBlack
End 1 Inside Diameter1 1/2
End 2 Inside Diameter1 3/4
Hose TypeDual I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height16

This part fits 28 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1979FordBronco5.8LV8UpperCurved Radiator Hose
1979FordBronco6.6LV8UpperCurved Radiator Hose
1979FordF-1005.8LV8UpperCurved Radiator Hose
1979FordF-1006.6LV8UpperCurved Radiator Hose
1979FordF-1505.8LV8UpperCurved Radiator Hose
1979FordF-1506.6LV8UpperCurved Radiator Hose
1979FordF-2505.8LV8UpperCurved Radiator Hose
1979FordF-2506.6LV8UpperCurved Radiator Hose
1979FordF-3505.8LV8UpperCurved Radiator Hose
1979FordF-3506.6LV8UpperCurved Radiator Hose
1978FordBronco5.8LV8UpperCurved Radiator Hose
1978FordBronco6.6LV8UpperCurved Radiator Hose
1978FordF-1005.8LV8UpperCurved Radiator Hose
1978FordF-1006.6LV8UpperCurved Radiator Hose
1978FordF-1505.8LV8UpperCurved Radiator Hose
1978FordF-1506.6LV8UpperCurved Radiator Hose
1978FordF-2505.8LV8UpperCurved Radiator Hose
1978FordF-2506.6LV8UpperCurved Radiator Hose
1978FordF-3505.8LV8UpperCurved Radiator Hose
1978FordF-3506.6LV8UpperCurved Radiator Hose
1977FordF-1005.8LV8UpperCurved Radiator Hose
1977FordF-1006.6LV8UpperCurved Radiator Hose
1977FordF-1505.8LV8UpperCurved Radiator Hose
1977FordF-1506.6LV8UpperCurved Radiator Hose
1977FordF-2505.8LV8UpperCurved Radiator Hose
1977FordF-2506.6LV8UpperCurved Radiator Hose
1977FordF-3505.8LV8UpperCurved Radiator Hose
1977FordF-3506.6LV8UpperCurved 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:

22113M

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