Flex Radiator Hose
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CARQUEST by Dayco Flex Radiator Hose

Part No. 81391 Warranty Details  

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Precision molded in standard lengths, Dayco’s Flex Radiator Hose is designed to replace straight or molded radiator hoses. This Flex Radiator Hose is another Dayco product proudly made in the USA. Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • The knitted reinforcement and synthetic EPDM construction meets SAE J20R4, Class D-2 requirements
  • Resists ozone and other detrimental environmental elements, coolants, and temperature variations of -40°F (-40°C) to +257°F (+125°C)
  • The corrugations provide excellent hose flexibility without flattening or collapse
  • This hose is designed to prevent splitting, ballooning, and elongation
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End 1 Inside Diameter:1 3/4 in
End 2 Inside Diameter:2 in
Heat Shield:N
Hose Type:Dual I.D. Hose
Protective Sleeve Attached:N
SAE Approved:SAE J20R4 Class D-2

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2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    What is DIAMETER?
    Asked on 3/21/2013 by Will from Phoenixville, PA

    1 answer



      The specification of this Drive-Rite Flex Radiator Hose, Standard, Part No. 2019 are: coolant hose length: 19 inches, coolant hose material: EPDM, coolant hose type: dual i.d. (inside diameter), hose end (1) inside diameter: 1.75 inches, hose end (1) outside diameter: 2.13 inches, hose end (2) inside diameter: 2 inches, hose end (2) outside diameter: 2.38 inches, maximum working pressure: 33.33 psi.
      For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.
      For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

      Answered on 3/21/2013 by Aaron from AAP
  • Q:

    How to you get this to not interfere with belts?
    Asked on 4/6/2012 by Anonymous

    1 answer



      The upper and lower hoses are removable simply by working from on top and underneath. They can be removed without disturbing the timing belt cover. We will need more information including the year, make, model, and engine size of your application before we can make a suggestion. Please call us at 1-877-ADVANCE (238-2623) and we would be more than happy to further assist you.

      Answered on 4/7/2012 by John the Car-Doc from AAP
Displaying questions 1-2

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