Heater Core
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ToughOne or Ready-Aire Heater Core

Part No. 399142 Warranty  

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

REVIEW SNAPSHOT®

by PowerReviews
ToughOne or Ready-AireHeater Core
 
2.9

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (3)

  • 1 Stars

     

    (4)

69%

of respondents would recommend this to a friend.

Pros

  • Lightweight (3)

Cons

  • Difficult to install (10)

Best Uses

  • Replacement (7)
  • Everyday driving (6)
    • Reviewer Profile:
    • Auto enthusiast (8), Mechanic (4), Truck enthusiast (4)

Most Liked Positive Review

 

Worked with mods

Have to mod heater box, but comes with instructions. No problem!

Have to mod heater box, but comes with instructions. No problem!

VS

Most Liked Negative Review

 

Mediocre

Installed in 1993 Dodge Dakota.

The updated design (shorter and thicker) means that the core is less likely to clog and has better heat transfer. Unfortunately the inlet and outlet...Read complete review

Installed in 1993 Dodge Dakota.

The updated design (shorter and thicker) means that the core is less likely to clog and has better heat transfer. Unfortunately the inlet and outlet tubes of this core are poorly bent and soldered to the mounting bracket. I had to desolder the bracket, align the tubes and resolder. If you have replaced a heater core before you should be able to handle this modification.

Reviewed by 17 customers

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3.0

Didn't fit as well as it should.

By Zeek

from Sanford, NC

About Me Auto Enthusiast, Truck Enthusiast

Level 2

Pros

    Cons

    • Difficult To Install

    Best Uses

    • Replacement

    Comments about ToughOne or Ready-Aire Heater Core:

    I installed this heater core in a '99 Dodge Dakota. As mentioned in the hard to read instructions, you need to remove tabs in the OEM box to install this item. After removing the tabs, this heater core didn't fit easily. It was offset on the right side (passenger side) about 1/2" forward. This is due to the new heater core being a little longer than the OEM part. After installation, it works as it should and is well priced. Overall, I would prefer a better fitting part.

    Comment on this review(earn points)

     
    5.0

    Never a fun job

    By Grego

    from Helena AL.

    About Me Auto Enthusiast, Mechanic, Truck Enthusiast

    Verified Buyer
    Level 3

    Pros

    • Durable
    • Lightweight

    Cons

    • Difficult To Install

    Best Uses

    • Everyday Driving
    • Replacement
    • Restoration

    Comments about ToughOne or Ready-Aire Heater Core:

    things spring leaks, this is a direct replacement

    Comment on this review(earn points)

    (0 of 1 customers found this review helpful)

     
    1.0

    Lasted only 11 months

    By ChrisTX

    from Spring, TX

    About Me Auto Enthusiast

    Level 1

    Pros

      Cons

        Best Uses

          Comments about ToughOne or Ready-Aire Heater Core:

          Not the same part, bit smaller than factor but installed it. Wish I didn't b/c it started leaking anti-freeze after 11 months.

          Comment on this review(earn points)

          (1 of 1 customers found this review helpful)

           
          1.0

          Not so good.

          By TheRamMan

          from Athens, GA

          About Me Auto Enthusiast, Casual Driver, Mechanic, Truck Enthusiast

          Pros

          • None
          • None Its Not Any Good

          Cons

          • Difficult To Install
          • No Improvement In Performance
          • Replaced 3 Times Now
          • Won't Even Last 4 Months

          Best Uses

          • Na I Won't Buy It Again
          • None I Wont Buy It Again

          Comments about ToughOne or Ready-Aire Heater Core:

          When I bought the truck (a 96' Dodge Dakota, with the 3.9) I knew I was going to have too replace the heater core, & knew it was going too be timely as I've replaced them in dodge trucks before.
          However I've never had one give me this much trouble, not only was it the most complicated installation - I've had too replace it once every 4 months since I got the vehicle a year ago. Its gone out 3 times. I'm completely fed up with it.
          Completely replaced all components in the cooling system after the first time I had too replace it, even the parts that would have nothing too do with it busting (because the previous owner had it replaced 3 months before I purchased, & I wanted too make sure it wasn't something else causing it too go bad)
          Still the thing keeps busting, the only thing I can figure now is that I'm buying low quality heater core from advanced.
          IN NO WAY AM I TRYING TO TRASH TALK ADVANCED AUTO PARTS, they have good customer service, and for the most part good parts, however the "Tough one or, Ready-Aire" heater core's are next too worthless.

          Hope I helped someone along the line by writing this, I wouldn't advise making the purchase
          GO FACTORY FOR THIS PARTICULAR PART.

          Comment on this review(earn points)

          (0 of 1 customers found this review helpful)

           
          4.0

          replacement part

          By Dodgiesdad

          from Indiana Pa

          About Me Truck Enthusiast

          Ask me a question

          Verified Buyer
          Level 4

          Pros

          • Fits As Orginal

          Cons

          • Difficult To Install

          Best Uses

          • Replacement

          Comments about ToughOne or Ready-Aire Heater Core:

          As are all heater cores and evaporator cores this is a time consuming instalation

          Comment on this review(earn points)

          (1 of 2 customers found this review helpful)

           
          1.0

          Did Not Fit

          By Bob

          from Hartford CT

          About Me Auto Enthusiast

          Verified Buyer
          Level 1

          Pros

            Cons

              Best Uses

              • Everyday Driving

              Comments about ToughOne or Ready-Aire Heater Core:

              Though the part ordered was correct under the Advance Auto Part number, it was about 2" too short and had to be returned. It caused me over two hours of installation time while trying to track down the correct heater core; fortunately NAPA had one in stock so the weekend was not a complete loss.

              Comment on this review(earn points)

              (10 of 18 customers found this review helpful)

               
              2.0

              It not copper like the photo shows

              By Pokagon NDN

              from south bend, IN

              About Me Mechanic

              Ask me a question

              Verified Buyer
              3 or more reviews submitted

              Pros

              • Online Order And Pick Up

              Cons

              • Difficult To Install
              • Looks Very Cheap
              • Pain To Put In A Dodge

              Best Uses

              • Replacement

              Comments about ToughOne or Ready-Aire Heater Core:

              Parted looked very cheap

              Comment on this review(earn points)

              (8 of 16 customers found this review helpful)

               
              2.0

              did not fit

              By me

              from pa.

              Verified Buyer
              Helpful Reviewer

              Pros

                Cons

                • Difficult To Install

                Best Uses

                  Comments about ToughOne or Ready-Aire Heater Core:

                  Too wide,i had to cut out tabs that hold heater core in place ,hope it doesnt break. did not have time to replace with proper core from different store

                  Comment on this review(earn points)

                  (8 of 18 customers found this review helpful)

                   
                  3.0

                  Heater Core by Ready-Aire

                  By Phinxter

                  from upstate NY

                  About Me Auto Enthusiast, Mechanic

                  Verified Buyer
                  Helpful Reviewer

                  Pros

                  • Cheap Lifetime Warranty
                  • Easy To Install

                  Cons

                  • Reduced Air Flow
                  • Smaller Than The Original

                  Best Uses

                    Comments about ToughOne or Ready-Aire Heater Core:

                    Not a perfect fit for my car but it beats having a leaky core. It is smaller than the original but all the aftermarket cores for my application are. I get less CFM through the ducts because of this, still gets the car plenty hot, for the price I can't complain too much.

                    Comment on this review(earn points)

                    (11 of 20 customers found this review helpful)

                     
                    5.0

                    Worked with mods

                    By Rojay

                    from Indian Trail, NC

                    About Me Auto Enthusiast

                    Verified Buyer
                    3 or more reviews submitted

                    Pros

                    • Works as expected

                    Cons

                    • Difficult To Install

                    Best Uses

                    • Everyday Driving

                    Comments about ToughOne or Ready-Aire Heater Core:

                    Have to mod heater box, but comes with instructions. No problem!

                    Comment on this review(earn points)

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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.

                    14 Questions | 17 Answers
                    Displaying questions 1-10Previous | Next »
                    • Q:

                      how long to change core
                      Asked on 9/15/2013 by na from bayard ne.

                      1 answer

                      • CUSTOMER CARE

                        A:

                        With reference to your inquiry on the ToughOne or Ready-Aire Heater Core - Part No. 399142, the time taken to replace the core is depends upon the skill level of the person performing the operation. The core's exact replacement within the engine can vary on each car, but you usually need to remove the car's dashboard from inside the car to reach it. You must have extensive knowledge of your car and its engine to install a heater core. For installation instructions of Heater Core with your vehicle, please provide the year, make and model of your vehicle and 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 9/15/2013 by Morgan from AAP
                    • Q:

                      That's not what I asked. Is there a real person that will answer my question? Or is this all just auto generated e-mails now?
                      Asked on 2/6/2013 by Panfax from WI

                      1 answer

                      • CUSTOMER CARE

                        A:

                        We apologize for any inconvenience caused. To replace heater core on your 1996 Dodge Dakota 3.9L, follow these steps:
                        1) Disconnect battery cable
                        2) Remove first screw on door sill both sides (these are the pieces that hold your carpet down)
                        3) Remove kick panels and panel under steering wheel.
                        4) Remove two nuts holding up steering wheel.
                        5) Remove five screws where dash meets the windshield.
                        6) Remove 2 bolts on the left and right side of the dash up against the side of truck (under kick panels)
                        7) Dashboard can now be pulled free toward seat.
                        8) On passenger side of dash tie rope or wire to flange where bolt went into side of truck and lift dash up to expose fan box. Secure rope to handle on side of A-post
                        9) Remove vacuum lines and unclip electrical connections. (Hint: temperature control cable has to be removed with pliers by pulling straight up, removing the entire clip.)
                        10) There are two screws holding the box to the firewall on the inside (one has ground wire attached.) The other is in the upper right hand corner facing up.
                        11) There are four nuts holding it from the engine side of the firewall (one nut is accessed by removing the electrical panel on passenger side.) Remove all four nuts.
                        12) Remove heater hoses by removing clamps.
                        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 2/7/2013 by John the Car-Doc from AAP
                    • Q:

                      On a 1999 Dakota w/AC, 4wd, the tag reads 5.3L. Does the whole dash need to be removed to replace the heater core?
                      Asked on 2/4/2013 by Panfax from WI

                      1 answer

                      • CUSTOMER CARE

                        A:

                        This part Ready-Aire Heater Core, Part No. 399142 is an exact fit for your 1999 Dodge Dakota w/AC. For help with your installation project, I would recommend purchasing a repair manual specifically for your vehicle. This should be able to assist you on how to repair or replace specific parts.
                        For any further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and our representatives would be more than happy to assist you.

                        Answered on 2/4/2013 by Aaron from AAP
                    • Q:

                      Where is the heater core on a 96 dodge Dakota with a 3.9
                      Asked on 1/25/2012 by Anonymous

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Yes, this part Ready-Aire Heater Core, part number 399142 manufactured by Ready-Aire fits your 1996 Dodge Dakota with a 3.9. The Heater Core should be located on the interior side of the firewall.

                        Answered on 1/25/2012 by Aaron from AAP
                    • Q:

                      with ac or not
                      Asked on 12/15/2010 by jer from lansford pa

                      1 answer

                      • CUSTOMER CARE

                        A:

                        In order for us to further assist you would you please provide us with the year, make, model, and engine size of your application?

                        Answered on 12/16/2010 by Ron the Auto Parts Rebel from AAP
                    • Q:

                      Where is it located in my 98 Dodge Dakota?
                      Asked on 12/4/2010 by Tony from Cedar Rapids,IA

                      2 answers

                      • CUSTOMER CARE

                        A:

                        Behind the dash

                        Answered on 12/6/2010 by Anonymous
                      • A:

                        Next to the evaporator under the dash.

                        This is a very timely repair taking a qualified technician close to 3.5 hours. Before you consider this repair you need to understand one has to disable the airbags on the vehicle before anything else.

                        Safety is the number one priority.

                        Answered on 7/29/2011 by Marcus from Bham, AL
                    • Q:

                      aprox how long does it take to do for a 1993 plymouth acclaim
                      Asked on 10/17/2010 by moose from keansburg

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Time will vary based on the experience of the shop or person doing the job.

                        Answered on 10/19/2010 by Kevin the King of Auto Parts. from AAP
                    • Q:

                      Someone replied to my question about using stop leak, and it sounds like that could cause some problems. Since the core is leaking and needs replacement, can anyone tell me how much dash dis assembly needs to be done? Are any special tools needed and about how long should this take a fairly competent shade tree mechanic?
                      Asked on 6/1/2010 by Lincoln from Gulf Breeze, Fl.

                      2 answers

                      • CUSTOMER CARE

                        A:

                        Usually a good bit of the dash has to be removed or at least moved. On some vehicles, the heater core can be accessed from under the dashboard without removing the dashboard itself. You should only need basic tools such as a socket/ratchet set, wrenches, and pliers most likely. For better assistance with the project, visit one of our local stores and see if they have a repair manual for your vehicle.

                        Answered on 6/2/2010 by Mike from AAP
                      • VERIFIED BUYER

                        A:

                        You have to remove the dash completely. There are two screws that hold a trim panel on the top of my dash. Pull that panel off and you should find four screws that have to be removed. The steering column has to be removed. Remove four 10MM bolts and rest the steering wheel and column on the driver seat. Then there is a 10MM bolt on each end of the dash that needs to be loosened but not removed. There is another 10MM bolt attached to lower right side of the dash under the glove box. Now disconnect the wire harness from the fire wall and all the other connections such as the vaccum lines that control the a/c and heat. Remove the dash and set it out of the way. Then you can remove the heater core by removing the four nuts on the engine side of the firewall that hold the heater core on. Take the heater hoses off of the heater core. Now pull the heater core box out and take it apart and replace the leaky core. I have done this in less than an hour and I'm not a mechanic.

                        Answered on 7/5/2010 by DLTHAMES from Defuniak Springs, FL
                    • Q:

                      With this being quite a time consuming replacement, would any one recommend trying some stop leak first? We are trying to help our son's teacher, who is financially a little strapped. We can help with the part, and I can do most parts replacements myself. But if the dash needs to be pulled, she could be without a vehicle for a while. Will stop leak hurt any other components of the cooling system, or is it worth trying before replacing the core?
                      Asked on 6/1/2010 by Lincoln from Gulf Breeze, Fl.

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Using a stop leak product runs the risk of clogging the heater core all together and then you would have to pull the dash to replace the heater core.

                        Answered on 6/1/2010 by Mike from AAP
                    • Q:

                      on a 1998 dodge durango can the core be reached without taking the whole dash apart?
                      Asked on 4/22/2010 by jj from indiana

                      1 answer

                      • CUSTOMER CARE

                        A:

                        For step by step instructions i highly recommend that you go into your local Advance Auto Parts store and pick up a repair manual.

                        Answered on 4/30/2010 by Kevin from AAP
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