Skip the auto shop - Our mechanics make house calls

Q: i dont know the size of the heater core is it 5/8 or a 2 inch

asked by on

what size is the heater core 5/8 or 2 inch because when i called autozone they said that their ws 2 different sizes

My car has 155000 miles.
My car has an automatic transmission.

The 5/8 inch dimension versus the 2 inch dimension simply refers to the "thickness" of the core body. If you have your core out, or can wait to access it, just simply look and see if the core is very thin (5/8 inch) or really thick (2 inches). The 5/8 inch core is listed in the catalog for both the Durango and the Dakota, which set of applications matches the OEM catalog so my guess is you have the 5/8 inch core but again if you have to remove the core anyway, you will be able to confirm the dimension once it is out. Based on product reviews on this core as an aftermarket product I do NOT recommend you buy the core as aftermarket product. The only guarantee you have that it will fit (and not, seriously, have to be modified or forced into place) is to buy the core OEM from a dealer (including on-line) source. Furthermore, if you buy it from the dealer, there will be no uncertainty at all regarding core thickness. You simply give the dealer your VIN number, they hand you your part, no confusion and again, most important of all the part will actually fit and not cause you endless installation headaches. YourMechanic would be pleased to procure and install this part for you. If you desire a prompt and professional installation of the heater core by a certified mechanic, please simply request heat diagnostic/heater core replacement.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Electrical system issues

You may be having wiring harness issues that would have to be isolated and traced for each problem you are having. The door locks could be a wiring or a lock actuator issue. These are probably random unrelated issues that...

Q: Hello. Do you recommend aftermarket or OEM for the front CV shaft assembly?

Hi there. The aftermarket parts and OEM parts are certified to be operated on the vehicle. You can operate your vehicle with aftermarket parts as long as the part is the same design. I recommend using the OEM specified part...

Q: Code P0720 and truck does not shift normally.

Hi there. The code that you are getting is for the output speed sensor of the transmission. I change quite a few of these as they are a common issue. I would have this replaced first and clear the codes....

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...