Curved Radiator Hose
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CARQUEST by Dayco Curved Radiator Hose

Part No. A70646 Warranty Details  

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Dayco Molded Radiator and By-Pass Hoses are designed to provide the high strength and resistance to oil, mud, salt, road debris, ozone, coolants, and temperature variations required for a superior performance replacement hose.

Product Features:
  • Made with synthetic EPDM rubber compounds that provide resistance to deterioration from ozone, coolants, and temperature variations of -40°F (-40°C) to +257°F (+125°C)
  • The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose
  • Meets SAE J20R4, Class D-1 requirements for improved service hose
  • Meets Type EC electro-chemical requirements as specified in SAE J1684; which eliminates premature deterioration of the inner tube caused by the build up of static electric charges
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Length:5.50 in


by PowerReviews
CARQUEST by DaycoCurved Radiator Hose

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

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Agree, bad fit


from NJ

About Me Mechanic

Comments about CARQUEST by Dayco Curved Radiator Hose:

This has 3/4 one end, 5/8 other end. Direct replacement is 5/8 both ends

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(2 of 3 customers found this review helpful)


Works with help


from Dayton, OH

About Me Auto Enthusiast

Verified Buyer
Level 1


  • Durable
  • Works


  • Cut to fit
  • Difficult To Install
  • Needs Good Clamps
  • Oversized On The One End

Best Uses

  • Everyday Driving

Comments about CARQUEST by Dayco Curved Radiator Hose:

Not a direct fit.

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2 Questions | 3 Answers
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  • Q:

    Will this hose work to replace the throttle body hose that come out of the throttle body and goes to the heater hose to the left of the air intake hoses on a 91 F-150 with the 5.8 L engine?
    Asked on 3/24/2016 by Nate from Savannah, GA

    1 answer



      Hi Nate, happy to help you! This CARQUEST by Dayco Curved Radiator Hose (Part No. A70646) goes from the water pump to the thermostat housing. I would suggest that you visit the nearest Advance Auto Parts store to check the availability of this part.

      Answered on 3/30/2016 by Steve from AAP
  • Q:

    Asked on 2/13/2011 by JOHN from SAN ANTONIO, TX.

    2 answers

    • A:


      Answered on 4/11/2011 by fordman from macon,ga
    • A:


      Answered on 1/20/2012 by untilthird from b-ville NC
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