Heater Core
Hover over the image to zoom in
Share this:

CARQUEST Heater Core

Part No. 398294 Warranty Details  

See if this part fits a specific vehicle.

Check Vehicle Fit

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.
Back To Top
Core Height:8 5/8 in
Depth:2 in
Inlet Connection Type:Oring
Inlet Diameter:3/4 in
Outlet Connection Type:Oring
Outlet Diameter:3/4 in
Thickness:2 1/2 in
Width:5 1/2 in


by PowerReviews

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

Displaying review 1

Back to top


"Don't buy this product as replacement".


from Valley Cottage, NY

About Me Jack Of All Traits, Mechanic

Verified Buyer


  • Cheap Lightweight
  • Lightweight


  • Difficult To Install
  • Soft Made Of Aluminum

Best Uses

  • None
  • Replacement

Comments about CARQUEST Heater Core:

The oem part is made of copper. This one is made of aluminum. The flange or flared ends are bigger and thicker than the oem part that is whhy it's very hard to install. The locking clip would not go in and the hole of the pipes are a bit smaller that the oem part. That's why I ended up using two hose clamps rather than the oem clips and use a high temp RTV silicone gasket to seal the pipes from leaking.

Displaying review 1

Back to top

Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

1 Question | 1 Answer
Displaying question 1
  • Q:

    What metals, exactly, are used in this heater core? The description is extremely vague about that. It says "long-life alloys". Is it aluminum, brass, copper, steel?
    Asked on 8/17/2010 by will from Keyport, NJ

    1 answer



      I believe that this is aluminum.

      Answered on 8/17/2010 by Mike from AAP
Displaying question 1

Do you have a question about this product? 

Check out the specials in our monthly flyer.
Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.