Heater Core
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CARQUEST Heater Core

Part No. 399088 Warranty Details  

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Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. Our heaters are designed and tested to meet or exceed OE specifications for form, fit, and function. Using premium quality materials and a clear focus on the highest heat transfer performance possible, our engineers have designed this heater to perform at the highest standards to ensure a warm cab environment during those cold winter months.
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Inlet Diameter:5/8 in
Outlet Diameter:3/4 in
Thickness:1 in


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(based on 1 review)

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Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Doesn't fit like it should


from Clemmons, NC

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Helpful Reviewer



    • Does not fit properly

    Best Uses

      Comments about CARQUEST Heater Core:

      I bought this as a replacement for my 1979 Oldsmobile Cutlass Cruiser. The top of the heater core is different than the one that was in the car and will not allow use of the original mounting hardware. Also, it is slightly smaller in width than the original and instructions said to put some foam on the sides and in the heater core box so that it would seal. I find this all unacceptible and will be returning it.

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      1 Question | 2 Answers
      Displaying question 1
      • Q:

        Where in my car is the heater core located
        Asked on 12/16/2010 by Anonymous

        2 answers



          Behind the dash

          Answered on 12/17/2010 by Anonymous
        • A:

          It depends on the year and model. An 86 cutlass supreme is located in the top of the ac box under the hood (fairly easy access) others are behind the dash.

          Answered on 2/10/2012 by Dean from Hawley Pa
      Displaying question 1

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