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Radiator

AC Delco® 21648 Radiator, GM Original Equipment Series

Manufacturer #21648

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21648 Radiator, GM Original Equipment Series

AC Delco® 21648 Radiator, GM Original Equipment Series

Manufacturer #21648

|
$447.11

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AC Delco®Radiator, Gm Original Equipment Series
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87
Works wellRadiator, Gm Original Equipment Series
5.0/5
This fit very well and has been holding up since 2021. Approximately 32K miles with a little bit of towing and no problem.
DE
Posted by David E. / Wed, Mar 11
AC Delco RadiatorRadiator, Gm Original Equipment Series
5.0/5
Some say it doesn’t matter what radiator you choose to purchase for your vehicle. When my radiator was installed it was complimented multiple times during installation…the quality and fit was mostly recognized and opinions agreed that the quality was indeed worth the cost.
MM
Posted by Matthew M. / Wed, Nov 26
Radiator, Gm Original Equipment Series
5.0/5
The radiator was delivered on time and the product and fit were perfect thank you
PQ
Posted by Paul Q. / Thu, Sep 25
Radiator for GMC Sierra 5.3LRadiator, Gm Original Equipment Series
5.0/5
It being an acdelco, it was exactly as I hoped. It fit like a glove and I appreciated the fact that the oil connectors were sent with plugs. Thumbs up folks !
JB
Posted by Jim B. / Tue, Mar 18
Fit exactly like originalRadiator, Gm Original Equipment Series
5.0/5
Fit like factory as advertised. All components and lines fit perfectly like oem would definitely purchase oem over the aftermarket for ease of installation.
RR
Posted by Roy R. / Mon, Mar 17
Showing 1 - 5 of 40 Reviews

Have a question about this product?Ask here. Our team of experts will assist you along with your fellow CarParts.com community members. Please add your vehicle information including year, make, model to better assist you.
Question: does this radiator has engine and transmission cooler ?Merlin C. / Oct 31, 2022
Hi Merlin, I'm more than happy to help. Yes, it does. You can use this link to go back to the item page and continue ordering the part at 43% off the regular price today: https://www.carparts.com/radiator/ac-delco/ac21648?can=CPAP3648_CSQA_20221031 I hope this helps. Enjoy shopping.
AP
Staff
Answered by Aldrin P. / Mon, Oct 31
Yes Merlin, this radiator will cool your engine and has provisions for the transmission as well.
JL
Answered by John L. / Mon, Oct 31
Yes, factory style replacement.
DE
Answered by David E. / Mon, Oct 31
Yes it does.
MJ
Answered by Michael J. / Tue, Nov 08
Question: does this match OEM part # 20939136 (21779) ?Just In Body Shop J. / Apr 19, 2025
Hi Jerome, thank you for reaching out. This product doesn't match your OE (original equipment) number 20939136. Please call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you look for the correct part. Have a nice day.
AP
Staff
Answered by Aldrin P. / Sat, Apr 19
Question: Why is the aluminum tank model cheaper than the plastic tank model?Jonathan Y. / Aug 04, 2023
Hi Jonathan, thank you for reaching out. Kindly call our parts team at 1-866-529-0412 and provide the part numbers you are trying to compare. We hope to hear from you soon.
AB
Staff
Answered by Andrew B. / Fri, Aug 04
Showing 1 - 3 of 3 Questions
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