Heater Core
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ToughOne or Ready-Aire Heater Core

Part No. 398343 Warranty  

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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 in
Core Width:7 5/16 in
Inlet Size(s):5/8 in
Outlet Size(s):5/8 in

REVIEW SNAPSHOT®

by PowerReviews
ToughOne or Ready-AireHeater Core
 
3.0

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (2)

56%

of respondents would recommend this to a friend.

Pros

  • Lightweight (3)

Cons

  • Difficult to install (4)

Best Uses

  • Replacement (5)
  • Everyday driving (3)
    • Reviewer Profile:
    • Mechanic (5), Casual driver (4)

Most Liked Positive Review

 

This is a good quality product

What is there to say about a heater core? lol I suppose the most important thing is that it matched the description , and was what I ordered to replace the leaking core in...Read complete review

What is there to say about a heater core? lol I suppose the most important thing is that it matched the description , and was what I ordered to replace the leaking core in my Ford truck... The cost was reasonable and I was pleased to see that the quality appeared to be good, despite the fact that there were other, more costly heater cores available on the market. I was a little bit worried when I initially opened the box it was sold in, because there was very little packaging inside to keep the core from bouncing around and possibly getting damaged, but it was fine... I would recommend opening the box and inspecting it before leaving the store tho, especially if the box has any visible damage to it...

VS

Most Liked Negative Review

 

Dont judge a book by its cover

This part was extremely hard to install, not anyones fault but Ford , nothing to do with advance auto parts or manufacturer, I would not suggest the average shade tree mechanic attempt this job...Read complete review

This part was extremely hard to install, not anyones fault but Ford , nothing to do with advance auto parts or manufacturer, I would not suggest the average shade tree mechanic attempt this job , because it is a job that would cost more to take to some one else after the faint at heart attempted to do it .It was nice for the perts man to advise me to get the acyuator door it saved me some time because mine was broken and i didnt even know it .The connections wer weak at the joints you could move the inlet and outlet both they were not braded or secured verywell, so I soldered mine on both connections , and it was a good thing ,because the new connectors were very difficult to lock on to the new heater core , if i had not soldered them I would be having to replace the heater core right away just bbecase of the weak joints. So I would not recomend a friend to try this repair only becase the part was weak but it is a very difficult task.I buy alot of parts from advance all the time , and usally have a great experience parts and service .

Reviewed by 10 customers

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Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

 
4.0

Great Fit

By Fred

from Delaware

About Me Casual Driver, Mechanic

Verified Buyer
Level 1

Pros

  • Easy To Install

Cons

    Best Uses

    • Replacement

    Comments about ToughOne or Ready-Aire Heater Core:

    Fit as well as OE. So far, so good.

    Comment on this review(earn points)

     
    3.0

    seems to be holding so far

    By AnarchoSteff

    from Kissimmee, FL

    Comments about ToughOne or Ready-Aire Heater Core:

    So, this was my first time removing ANY dashboard or replacing a heater core. I found a set of instructions online and followed them. I was about 6 hours in when I finally got the old one out and opened the box with the new one. There was no paperwork at all ... just the heater core and the foam. I was by myself with no other vehicle and the auto parts store about 4 miles away. The cursing and shouting started as soon as I noticed that YES ... the tubes twisted in their connections. It seemed like a defect. I couldn't imagine how this could make a seal. Once I tried to put it in, I realized that the placement of the tubes did not match up to the hole in the firewall. It then dawned on me that the ability to twist these things was probably by design. It sure would have been nice to have some paperwork in there to that effect though. I took a chance and DID NOT solder the connections in place as others did. So far, I've run it a couple hours and I don't see any signs of it leaking like I did with the bad one I took out. Time will tell if that was a wise choice or not.

    Comment on this review(earn points)

     
    1.0

    Dont judge a book by its cover

    By Dennis

    from blackshear ga

    About Me Auto Enthusiast, Master Technician, Mechanic, Truck Enthusiast

    Ask me a question

    Verified Buyer
    3 or more reviews submitted

    Pros

    • Lightweight

    Cons

    • Had To Solder Joints
    • Loose Welds

    Best Uses

      Comments about ToughOne or Ready-Aire Heater Core:

      This part was extremely hard to install, not anyones fault but Ford , nothing to do with advance auto parts or manufacturer, I would not suggest the average shade tree mechanic attempt this job , because it is a job that would cost more to take to some one else after the faint at heart attempted to do it .It was nice for the perts man to advise me to get the acyuator door it saved me some time because mine was broken and i didnt even know it .The connections wer weak at the joints you could move the inlet and outlet both they were not braded or secured verywell, so I soldered mine on both connections , and it was a good thing ,because the new connectors were very difficult to lock on to the new heater core , if i had not soldered them I would be having to replace the heater core right away just bbecase of the weak joints. So I would not recomend a friend to try this repair only becase the part was weak but it is a very difficult task.I buy alot of parts from advance all the time , and usally have a great experience parts and service .

      Comment on this review(earn points)

      (1 of 2 customers found this review helpful)

       
      1.0

      Did not fit

      By Pogo Bob

      from Oneida, TN

      About Me Casual Driver, Mechanic

      Verified Buyer
      Level 1

      Pros

      • Discount Promo Code
      • Easy Online Purchase
      • No Shipping Charges

      Cons

      • DID NOT FIT

      Best Uses

        Comments about ToughOne or Ready-Aire Heater Core:

        * Couldn't use it at all
        * Nothing great about a part that wont fit
        * What isn't so great is that it was apparently made for a different vehicle. Size was fairly close, but length, angle and diameter of tubes rendered it unusable for me, even though it was listed as an "exact fit". When I showed the associate my old one, he promptly ordered the other part number available for my vehicle (delaying me a day). It was even worse. Tubing diameter was correct, but nothing else (length, angle, location of securing rib on tubes). Also, this one was smaller by a third. At this point all they could was apologize and refund my money. I went down the street to your competitor and they had an EXACT replacement on the shelf, comparably priced. I recommend you review your "fit" info for this item.

        Comment on this review(earn points)

        (9 of 21 customers found this review helpful)

         
        2.0

        Get with it!

        By JT

        from Fayetteville, NC

        About Me Mechanic

        Level 2

        Pros

        • Durable

        Cons

        • Retaining Clips

        Best Uses

        • Everyday Driving

        Comments about ToughOne or Ready-Aire Heater Core:

        While removing and than reinstallation of the cooling hose plastic retaining clips, after 13 years what happens to plastic, thats right it gets brittle and of course the little tab broke off. So I have to wait until Monday for the dealer to open up, because Dorman has yet to make them. The dealership gouged me for $40.00 for two plastic retaining clips. Do not buy a Ford I repeat do not buy a Ford product.

        Comment on this review(earn points)

        (12 of 20 customers found this review helpful)

         
        4.0

        This is a good quality product

        By Tony the carpenter

        from Newington, Ct.

        About Me Casual Driver, Truck Enthusiast

        Verified Buyer
        Level 2

        Pros

        • Fair Price Good Quality

        Cons

        • Can~'~~t Find One

        Best Uses

        • Everyday Driving
        • Replacement

        Comments about ToughOne or Ready-Aire Heater Core:

        What is there to say about a heater core? lol I suppose the most important thing is that it matched the description , and was what I ordered to replace the leaking core in my Ford truck... The cost was reasonable and I was pleased to see that the quality appeared to be good, despite the fact that there were other, more costly heater cores available on the market. I was a little bit worried when I initially opened the box it was sold in, because there was very little packaging inside to keep the core from bouncing around and possibly getting damaged, but it was fine... I would recommend opening the box and inspecting it before leaving the store tho, especially if the box has any visible damage to it...

        Comment on this review(earn points)

        (8 of 18 customers found this review helpful)

         
        5.0

        Not as easy as you think

        By TE

        from Franklin Tn

        About Me Auto Enthusiast

        Verified Buyer
        Helpful Reviewer

        Pros

        • Durable
        • Lightweight

        Cons

        • Difficult To Install

        Best Uses

        • Replacement

        Comments about ToughOne or Ready-Aire Heater Core:

        This was replacement for old heater core light weight yet sturdy very difficult to install a DIY person better plan on a whole day to two days to complete

        Comment on this review(earn points)

        (10 of 18 customers found this review helpful)

         
        3.0

        heater core

        By bill the bull

        from port charlotte ,fla.

        About Me Mechanic

        Verified Buyer
        Level 2

        Pros

        • Lightweight

        Cons

        • Difficult To Install
        • No Improvement In Performance

        Best Uses

        • Replacement

        Comments about ToughOne or Ready-Aire Heater Core:

        This heater core is only half as thick as the org. therefore it is only half as effecient.

        Comment on this review(earn points)

        (10 of 19 customers found this review helpful)

         
        2.0

        Be careful

        By Jerm

        from Clear Lake, IA

        About Me Casual Driver

        Pros

          Cons

          • Difficult To Install

          Best Uses

          • Replacement

          Comments about ToughOne or Ready-Aire Heater Core:

          After installing took 10 hours. The core matches the outside dimensions and works. Finding out there is a difference on the inside. The core is really loud on acceleration like rushing water. After a month thinking what did I do wrong, found that it is the core itself. I have added a restrictor now to the heater hose only to kind of hear the noise. If a project takes this much time, go OEM all the way!

          Comment on this review(earn points)

          (13 of 26 customers found this review helpful)

           
          5.0

          heater core

          By chris

          from tennessee

          Verified Buyer
          Helpful Reviewer

          Pros

          • Improves Engine Efficiency

          Cons

          • Difficult To Install

          Best Uses

          • Everyday Driving

          Comments about ToughOne or Ready-Aire Heater Core:

          great product

          • Car & Truck:
          • Casual Driver

          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.

          26 Questions | 34 Answers
          Displaying questions 1-10Previous | Next »
          • Q:

            how do i remove heater core from 2002 ford f150 5.4 v8
            Asked on 2/25/2013 by tony from st louis mo.

            1 answer

            • CUSTOMER CARE

              A:

              With reference to your inquiry on the Ready-Aire Heater Core - part# 398343, Ford F-150 heater cores can be located either in the cab for models with air conditioning or in the engine compartment for those without an A/C. First, remove the cable from the negative battery terminal. Wait until the engine has cooled down, then drain the antifreeze from the radiator. Save the antifreeze if it's not old so you can put it back into the radiator after replacing the heater core. Remove the heater hoses at the firewall but leave the engine-side connections attached. For engine compartment-mounted cores: Disconnect the wires to the blower motor and the blower motor resistor. There are two nuts inside the cab and three screws in the engine compartment that hold the heater core in place. Remove the nuts from inside the cab first, then move to the engine compartment and remove the screws. You can now lift the entire heater case from the truck. Remove the heater core from the case by pulling out all nuts, bolts and screws that secure the core onto the case. For cab-mounted cores: The heater core is mounted under the dash and behind the glove compartment. To access the core, remove the glove compartment, which is held in place with a few screws. The heater core has seven screws that you must pull out. There is a vacuum line attached to the heater core cover; remove the line but leave the harness attached to the cover. Then lift the core from the truck. For any further assistance, you may also 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 2/26/2013 by Vincent from AAP
          • Q:

            How do I install heater core on 1999 Ford F150 with A/C? 4.6 ltr. What are the special instructions mentioned on the product page ref vehicles with A/C?
            Asked on 2/18/2013 by ed from Sanford, NC

            1 answer

            • CUSTOMER CARE

              A:

              With reference to your inquiry on the Ready-Aire Heater Core - part# 398343, the heater core on your 1997 Ford F-150 should be located under the passenger side dash, slightly to the left of your glove box. The problematic thing is that in order to remove this heater core you have to 1: drop the steering column, and 2: remove the entire dash from the firewall and drop it back. Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink ant that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old. Disconnect the battery ground cable. Drain and recycle the engine coolant. Remove the instrumental panel. Disconnect the heater core hose couplings. Remove the retaining screw and remove the A/C plenum demister adapter. Disconnect the vacuum line from the A/C plenum demister adapter. Remove the heater core bracket. Remove the 13 plenum chamber top retaining screws. Remove the plenum chamber top. Remove the blend door assembly from the case. Remove the heater core. The installation is the reverse of the removal. For any further assistance, you may also 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 2/18/2013 by Vincent from AAP
          • Q:

            how to replace heater core 1997 ford f-150 4.2
            Asked on 2/16/2013 by bubba from greenwood, in

            1 answer

            • CUSTOMER CARE

              A:

              For replacing this Ready-Aire Heater Core - part# 398343 on your 1999 Ford F 150, turn the engine of the F-150 off and open the hood. Use a socket wrench to disconnect the negative terminal from the truck's battery. Crawl underneath the vehicle and locate the radiator drain plug. Place a drain underneath the drain plug and use a socket wrench to loosen the plug. Wait five minutes for all of the fluids to drain out, then tighten the plug. Use a slotted screwdriver to pry out the hood releasing lever panel and the parking brake lever panel. Pry out the lower dash panel underneath the instrument cluster as well. Use a socket wrench to remove the two upper-corner bolts from the driver's-side knee bolster and the passenger's-side knee bolster. Use a slotted screwdriver to pry out both knee bolsters and then to pop off both the lower and upper covers of the steering column. Open the glove box and empty it out. Push outward on the glove box's interior sides and pull it off the dashboard. Uninstall the bolt underneath where the glove box was with a socket wrench. Use a Philips screwdriver to remove the three retaining screws from the air bag cover on the passenger's side of the vehicle. Remove the cover, disconnect the electrical connector from the air bag, and remove the air bag from the truck. Uninstall the two bolts on the underside of the dashboard above the instrument cluster. Remove the two bolts underneath the defroster vent with a socket wrench and pull the dashboard out of the truck. At this point, you have access to the heater core. Remove the two heater core hoses and remove the two screws from the cover with a Phillips screwdriver. Pull off the cover and uninstall the four bolts securing the heater core. Remove the old heater core and disconnect its electrical connection. Install a new one in its place by reconnecting the electrical connection and re-installing the four bolts. Reattach the cover and the screws. Reattach the dashboard and dashboard panels as well as all the bolts and screws. Reattach the knee bolsters and glove box. Reattach the negative terminal to the battery and remove the cap from the radiator. Pour the radiator fluids into the radiator and reattach the cap. Close the hood. 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 2/16/2013 by Vincent from AAP
          • Q:

            What is the easiest way to replace a heater core for a 1997 F250?
            Asked on 1/7/2013 by Jimmy from Staunton, Virginia

            1 answer

            • CUSTOMER CARE

              A:

              With Reference to your query on Ready-Aire Heater Core part# 398343, one of the easy way to replace a heater core in 1997 Ford F250 is follows:1. Disconnect the battery ground cable. 2. Drain the radiator. 3. Remove the instrument panel. 4. Compress the holding tabs and disconnect the heater water hoses at the heater core. 5. Remove the A/C plenum demister adapter, (I) Remove the screw, (II) Remove the A/C plenum demister adapter. 6. Disconnect the vacuum line. 7. Remove the heater core bracket. (I) Remove the two screws, (II) Remove the bracket. 8. Remove the plenum assembly top, (I) Remove the 13 screws. (II) Remove the plenum assembly top. 9. Remove the blend door assembly from the case. 10. Remove the heater core. For Installation: NOTE: When the battery (10655) is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy. To install, reverse the removal procedure. For more information, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our technicians would be more than happy to assist you.

              Answered on 1/7/2013 by Rick from AAP
          • Q:

            How do you replace a heater core on an 1999 Ford F 150 4 wheel drive with a V8 I think 5.4 liter.
            Asked on 12/13/2012 by John from Omah,a Ne

            2 answers

            • CUSTOMER CARE

              A:

              18. For replacing this Ready-Aire Heater Core - part# 398343 on your 1999 Ford F 150, turn the engine of the F-150 off and open the hood. Use a socket wrench to disconnect the negative terminal from the truck's battery. Crawl underneath the vehicle and locate the radiator drain plug. Place a drain underneath the drain plug and use a socket wrench to loosen the plug. Wait five minutes for all of the fluids to drain out, then tighten the plug. Use a slotted screwdriver to pry out the hood releasing lever panel and the parking brake lever panel. Pry out the lower dash panel underneath the instrument cluster as well. Use a socket wrench to remove the two upper-corner bolts from the driver's-side knee bolster and the passenger's-side knee bolster. Use a slotted screwdriver to pry out both knee bolsters and then to pop off both the lower and upper covers of the steering column. Open the glove box and empty it out. Push outward on the glove box's interior sides and pull it off the dashboard. Uninstall the bolt underneath where the glove box was with a socket wrench. Use a Philips screwdriver to remove the three retaining screws from the air bag cover on the passenger's side of the vehicle. Remove the cover, disconnect the electrical connector from the air bag, and remove the air bag from the truck. Uninstall the two bolts on the underside of the dashboard above the instrument cluster. Remove the two bolts underneath the defroster vent with a socket wrench and pull the dashboard out of the truck. At this point, you have access to the heater core. Remove the two heater core hoses and remove the two screws from the cover with a Phillips screwdriver. Pull off the cover and uninstall the four bolts securing the heater core. Remove the old heater core and disconnect its electrical connection. Install a new one in its place by reconnecting the electrical connection and reinstalling the four bolts. Reattach the cover and the screws. Reattach the dashboard and dashboard panels as well as all the bolts and screws. Reattach the knee bolsters and glove box. Reattach the negative terminal to the battery and remove the cap from the radiator. Pour the radiator fluids into the radiator and reattach the cap. Close the hood. For any further assistance, you may also visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.

              Answered on 12/13/2012 by Vincent from AAP
            • A:

              there is a great 3 part video on you tube.remember this is a 8hr book time job.also you will need to find a heater hose removal tool for the quick release heater hoses as they are difficult to reach.google" how to change heater core in a 1999 ford f150"and follow the link to you tube.hope this helps anyone.gl

              Answered on 3/20/2013 by frdfreak67 from appleton,wi
          • Q:

            will a stoped up heater core make it leak
            Asked on 10/17/2012 by keno from castor la.

            1 answer

            • CUSTOMER CARE

              A:

              If the antifreeze is not passing through the heater core, it will leak out. The leaking antifreeze usually puddles in the passenger side floorboard, so check there. Another way to check the heater core is through the heater hoses. There are two hoses that connect through the firewall to the core. They should both feel warm while the engine and heater are running; if one of them feels cold, there is likely a problem with the core. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

              Answered on 10/18/2012 by Steve from AAP
          • Q:

            Where is a good place to get schematics of the dash and how to remove it?
            Thanks
            Asked on 7/28/2012 by MICTAY from Easton, MD

            2 answers

            • A:

              go to yahoo browser and type in "Ford Expedition heater core replacement" the first yahoo video is awesome, it takes you through the entire dash tear down.

              Answered on 12/28/2013 by Space_Cowboy from San Antonio, TX "Home of the SPURS"
            • CUSTOMER CARE

              A:

              We greatly appreciate your taking time to submit a review. Please call us at 1-877-ADVANCE (238-2623) and we would be more than happy to assist you.

              Answered on 7/28/2012 by Aaron from AAP
          • Q:

            With 21 different types of heather cores on here ranging from cheap to expensive. how do I know this is the right one?
            2000 ford crown vic 4.6L
            thanks
            Asked on 7/28/2012 by MICTAY from Easton, MD

            1 answer

            • CUSTOMER CARE

              A:

              This part Ready-Aire Heater Core, Part No. 398343 does not fit 2000 Ford Crown Victoria 4.6L.
              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 7/29/2012 by Aaron from AAP
          • Q:

            how do you flush a heater core
            Asked on 3/25/2012 by Anonymous

            1 answer

            • CUSTOMER CARE

              A:

              The instructions to flush the heater core as been sent to your email address.

              Answered on 3/26/2012 by Dennis from AAP
          • Q:

            Is there any recommendations on how to flush a heater core? Mine is stopped up and i tried flushing with a water hose and cold water but that didnt unplug the blockage. I really dont want to take the dash all the way out but you have to have heat. Any suggestions????
            Asked on 12/28/2011 by Bphembree from Mt Juliet, TN

            1 answer

            • CUSTOMER CARE

              A:

              The instructions to flush your heater core has been send to your email address.

              Answered on 12/28/2011 by Dennis from AAP
          Displaying questions 1-10Previous | Next »

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