Heater Core
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CARQUEST or ToughOne Heater Core

Part No. 398310 Warranty Details  

See if this part fits a specific vehicle.

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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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Core Height:7 1/4 in
Core Thickness:1 1/4 in
Core Width:6 1/4 in
Inlet Size(s):5/8 in
Outlet Size(s):3/4 in

REVIEW SNAPSHOT®

by PowerReviews
ToughOne or Ready-AireHeater Core
 
3.9

(based on 11 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

73%

of respondents would recommend this to a friend.

Pros

  • Durable (7)
  • Easy to install (5)
  • Lightweight (3)

Cons

  • Difficult to install (3)

Best Uses

  • Replacement (7)
  • Everyday driving (6)
    • Reviewer Profile:
    • Auto enthusiast (3), Mechanic (3)

Most Liked Positive Review

 

Heater Core by Ready-Aire

Perfect fix! Very Good product for the money. Allow time and be patient while trying to remove the old heater core. If heater core does not come out with ease, there is probably...Read complete review

Perfect fix! Very Good product for the money. Allow time and be patient while trying to remove the old heater core. If heater core does not come out with ease, there is probably one or two screws holding it in place--especially at the back on the inside firewall. There is no need to break the plastic covering to remove the old heater core.

VS

Most Liked Negative Review

 

doesn't fit well for grand am

Tubes from core rotate slightly for different makes of cars. Doesn't fit grand am 3.3 liter. Tubes are at such an angle that you can't get clamps on tubes.

Tubes from core rotate slightly for different makes of cars. Doesn't fit grand am 3.3 liter. Tubes are at such an angle that you can't get clamps on tubes.

Reviewed by 11 customers

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Displaying reviews 1-10

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5.0

Good product

By junglejim

from porter in

About Me Mechanic

Ask me a question

Verified Buyer
3 or more reviews submitted

Pros

  • Durable
  • Easy To Install

Cons

    Best Uses

    • Everyday Driving

    Comments about ToughOne or Ready-Aire Heater Core:

    Good product easy to install

    Comment on this review(earn points)

     
    5.0

    Great Product

    By Mikey

    from Pottstown,Pa

    About Me Casual Driver, Mechanic

    Verified Buyer

    Pros

    • Durable
    • Easy To Install
    • Lightweight

    Cons

    • No Improvement In Performance

    Best Uses

    • Everyday Driving
    • Replacement

    Comments about ToughOne or Ready-Aire Heater Core:

    The product is a great but for the price. And it works great.

    Comment on this review(earn points)

    (2 of 2 customers found this review helpful)

     
    5.0

    Great Value for 98 Grand Am

    By JohnR

    from Goodview,VA.

    About Me Auto Enthusiast, Mechanic

    Ask me a question

    Level 3

    Pros

    • Durable
    • Easy To Install

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about ToughOne or Ready-Aire Heater Core:

      If you have a 4 cylinder Grand Am,Go online and find easy to understand instructions. Takes about 3 to 4 hours. I will help out any way I can about my experience. Let me know.

      Comment on this review(earn points)

       
      5.0

      accurate simply put

      By shak

      from holtwood,pa

      About Me Auto Enthusiast

      Verified Buyer
      Level 2

      Pros

      • Durable
      • Easy To Install
      • Lightweight

      Cons

      • None Is As Expected

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about ToughOne or Ready-Aire Heater Core:

      bought this item to replace worn out oem. fit perfect no hassles doesn't leak and exact fit as specified.thanks advance for providing quality products for economical repairs! will continue to order online as well as in store pick up. after several years of purchasing products I have not been left dowm yet!

      Comment on this review(earn points)

      (13 of 23 customers found this review helpful)

       
      2.0

      doesn't fit well for grand am

      By vb

      from dandridge, tn

      Pros

        Cons

        • Difficult To Install

        Best Uses

          Comments about ToughOne or Ready-Aire Heater Core:

          Tubes from core rotate slightly for different makes of cars. Doesn't fit grand am 3.3 liter. Tubes are at such an angle that you can't get clamps on tubes.

          Comment on this review(earn points)

          (10 of 23 customers found this review helpful)

           
          4.0

          Heater Core

          By bigdd

          from Rockford, IL

          About Me Auto Enthusiast

          Verified Buyer
          Level 2

          Pros

          • Improves Engine Efficiency
          • Lightweight

          Cons

          • Difficult To Install

          Best Uses

          • Replacement

          Comments about ToughOne or Ready-Aire Heater Core:

          I installed this and it was hard to get it in but when i saw the OEM that was in the car it was plastic and this is all aluminum. I think that this is better then the OEM.

          Comment on this review(earn points)

          (10 of 24 customers found this review helpful)

           
          1.0

          item don't work properly,leaking

          By allen which is me

          from cave city,ar

          Verified Buyer
          Helpful Reviewer

          Comments about ToughOne or Ready-Aire Heater Core:

          the item is defective.

          Comment on this review(earn points)

          (12 of 23 customers found this review helpful)

           
          5.0

          Excellent Replacement Core

          By Mike M

          from Windham, Ohio

          Verified Buyer
          Helpful Reviewer

          Pros

          • Durable
          • Exact fit
          • Well made

          Cons

          • Difficult To Install

          Best Uses

          • Replacement

          Comments about ToughOne or Ready-Aire Heater Core:

          Exact fit replacement for old heater core. Depending on vehicle, can be very difficult to install.

          • Car & Truck:
          • Auto Enthusiast, Casual Driver, Mechanic, Truck Enthusiast

          Comment on this review(earn points)

          (13 of 24 customers found this review helpful)

           
          5.0

          Heater Core by Ready-Aire

          By HM

          from Manassas. Va.

          Pros

          • Durable

          Cons

            Best Uses

            • Everyday Driving
            • Replacement

            Comments about ToughOne or Ready-Aire Heater Core:

            Perfect fix! Very Good product for the money. Allow time and be patient while trying to remove the old heater core. If heater core does not come out with ease, there is probably one or two screws holding it in place--especially at the back on the inside firewall. There is no need to break the plastic covering to remove the old heater core.

            • Car & Truck:
            • Casual Driver

            Comment on this review(earn points)

            (11 of 21 customers found this review helpful)

             
            5.0

            I HAD NO PROBLEM AT ALL WITH THIS PART!

            By HOWIE

            from BLUE SPRINGS MO

            Pros

            • Durable
            • Easy To Install

            Cons

              Best Uses

              • Everyday Driving
              • Replacement
              • Restoration

              Comments about ToughOne or Ready-Aire Heater Core:

              THIS PART WAS AS GOOD IF NOT BETTER THAN THE FACTORY PART!!

              Comment on this review(earn points)

              Displaying reviews 1-10

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              Do you have questions about this product?(earn points for answers!)

               

              Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

              7 Questions | 9 Answers
              Displaying questions 1-7
              • Q:

                does anyone know any advice on changing this on 97 grand am with 3.1L ? ANY SCERETS ?
                Asked on 12/17/2014 by LONEWOLF from NEW CONCORD,KY.

                1 answer

                • CUSTOMER CARE

                  A:

                  Hi Lonewolf, For help with your project, I recommend purchasing a Haynes or Chilton repair manual specifically for your vehicle. This should be able to assist you further into detail on how to repair or replace specific parts. The repair manual part number is 38025.

                  Answered on 12/18/2014 by Steve from AAP
              • Q:

                This is not the right one for the car I'm working on, I even went as far as giving the VIN and the same wrong heater core comes up. Any ideas would help, I've tried a grip!
                Asked on 5/29/2012 by Christopher from Lakewood

                1 answer

                • CUSTOMER CARE

                  A:

                  We will need more information including the year, make, model, and engine size of your application before we can make a suggestion.

                  Answered on 5/30/2012 by Aaron from AAP
              • Q:

                For vehicle: 1996 Pontiac Grand Am SE 3.1L 189CI V6 FI Vin:M
                Is there a reason why no specifications are give for many of your catalog items? With this particular item, it would be nice, for example to know the inlet and outlet sizes as they are different.
                Asked on 8/24/2010 by Kenny from Sanford, FL

                1 answer

                • CUSTOMER CARE

                  A:

                  Inlet Size 5/8 in.
                  Outlet Size 3/4 in.
                  Heater Core Length (in) 6.250 in.
                  Heater Core Width (in) 7.250 in.
                  Heater Core Thickness (in) 1.250 in.

                  Answered on 8/24/2010 by Mike from AAP
              • Q:

                could the heater core make the car not shift???
                Asked on 3/19/2010 by josh from la porte, IN

                1 answer

                • CUSTOMER CARE

                  A:

                  No the heater core will not cause your car to not shift.

                  Answered on 3/22/2010 by kevin from AAP
              • Q:

                how hard is is to remove this heater core?
                Asked on 1/12/2010 by Anonymous

                1 answer

                • A:

                  Its not hard so to speak as much as it is time consuming.. the hardest part will be working on your back in a small interior. most is easy stuff... hardest part is removing the main cover.. *Hint* most will miss this, but theres a small bolt RIGHT behind the gas pedal.

                  Answered on 2/22/2010 by Nickels from Thornton, CO
              • Q:

                where is the heater core located under the dash in a 89 corsica
                Asked on 12/26/2009 by Anonymous

                1 answer

                • A:

                  Dead center towards firewall, behind radio bezel. There's 2 covers; the floor/rear air duct, and the main cover. hoses are under hood, dead center of firewall, below exhaust manifold

                  Answered on 2/22/2010 by Nickels from Thornton, CO
              • Q:

                where is the location of the heater core?
                Asked on 12/22/2009 by sunny from manning, sc. 29102

                3 answers

                • CUSTOMER CARE

                  A:

                  The most common location for a heater core is behind the dash, but it depends on the vehicle.

                  Answered on 12/22/2009 by Mike from Advance Auto Parts
                • A:

                  under dashborad

                  Answered on 1/3/2010 by joe from baltimore,md
                • A:

                  under dashborad

                  Answered on 1/3/2010 by joe from baltimore,md
              Displaying questions 1-7

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