Please measure your Radiator size before ordering.
Core Dimensions
37.81 x 19.44 x 2.25 in. Core Size
Automatic Transmission Cooler
With Transmission Cooler
Engine Oil Cooler
With Engine Oil Cooler
Inlet Size
1.57 in. Inlet
Recommended Use
OE Replacement
Numberof Rows
2-Row Core
Tank Material
Plastic Tank
Core Material
Aluminum Core
Color Finish
Factory Finish
Outlet Size
1.81 in. Outlet
Replaces DPI Number
DPI# 2947
Product Fit
Direct Fit
Quantity Sold
Sold Individually
Replaces OE Number
89019156
Replaces Partslink Number
GM3010439
Warranty
1-year Replacement unlimited-mileage warranty
Prop 65 Warning
WARNING: This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Promotions
Spring Sale
Core Height
37.81 in.
Core Thickness
2.25 in.
Core Width
19.44 in.
Interchange Part Number
CU2947, 89019156, GM3010439
Returns Policy
30-Day Return Policy
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Return Policy
Not satisfied with your purchase? We offer returns for most items within 30 days of delivery for a refund. Check out our Return Policy for more details.
Warranty Policy
Right parts, guaranteed. If you find any defects, simply notify us within the warranty period, and we’ll take care of it. Check out our Warranty Policy for more details.
ReplacementRadiator, 8.1L, With Allison 5-Speed Auto Transmission, Aluminum Core, Plastic Tank
1 Star
6
2 Star
0
3 Star
0
4 Star
19
5 Star
75
RadiatorRadiator, 8.1L, With Allison 5-Speed Auto Transmission, Aluminum Core, Plastic Tank
5.0/5
First one was damaged in shipping but they quickly sent a replacement all is good
CG
Posted by Chris G. / Thu, Feb 29
All goodRadiator, 8.1L, With Allison 5-Speed Auto Transmission, Aluminum Core, Plastic Tank
5.0/5
Okay the radiator fit perfectly the only problem was the transmission coolant lines and oil fitting were to small I have 5/8 lines fittings but all good I had to work modify some fittings because I needed my truck thank you for everything
NJ
Posted by Nicholas J. C. / Fri, Jan 12
RadiatorRadiator, 8.1L, With Allison 5-Speed Auto Transmission, Aluminum Core, Plastic Tank
5.0/5
Sorry i have tried to rewrite a review for the four time, just wanted to say it fitted perfectly no issues with fittings , compared to the competitors , wrong size n fittings not the right size, also who ever replaces radiator with the 8.1 engine they might have to replace the thermostat housing water outlet n gasket it gets weak with age , also can't replace gasket by itself because no one sells it u can make it out of gasket maker or that especially paper, if u think the thermostat housing outlet is still good an u replace it with a new one u might want to keep it as a back up , good luck everyone, the radiator was as the salesperson described oem replacement.
JG
Posted by Juan G. / Thu, Oct 19
Return and new replacement!,,,Radiator, 8.1L, With Allison 5-Speed Auto Transmission, Aluminum Core, Plastic Tank
5.0/5
The first radiator they sent me was damaged in shipping so you responded with a very positive response and sent me a replacement. I’m truly grateful for the response I received from carports .com . I will definitely be purchasing my car parts from you from now and in the future!
RO
Posted by Robert O. / Sun, Oct 01
Radiator, 8.1L, With Allison 5-Speed Auto Transmission, Aluminum Core, Plastic Tank
4.0/5
First radiator came damaged but was fixed immediately. Appreciate the fast response and never questioned.
MM
Posted by Mark M. / Tue, Aug 01
Showing 1 - 5 of 16 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: Will it fit 2002 Chevy 3500 8.1 with Allison trans cooler are both 5/8?Robert T. / Jun 21, 2022
This radiator shown that I ordered is for a 2003 Chevy Silverado 3500 HD 8.1 liter with a Allison transmission and it fit my 2002 Chevy Silverado 2500HD 8.1 liter with a Allison transmission perfectly.The only problem I had was shipping, the radiator isn't packaged well enough to withstand the shipping abuse and it may or may not get to you without damage that will render it unusable. Needs to be packaged more securely.
RS
Answered by Robert S. / Tue, Jun 21
No. It will not. The hoses don’t connect to this radiator.
JH
Answered by Jason H. / Tue, Jun 21
Question: I have a 2003 3500 cab chassis
with manual 6 speed will this fit?Kevin S. / Dec 05, 2022
Hi Kevin, I'm glad to assist you. No, it won't. Use our vehicle selector at the top of the page. Enter your vehicle's exact year, model, submodel, and engine size. Our website will tell you automatically if the part you're looking for will be a guaranteed fit. I hope this helps, and happy shopping.
AE
Staff
Answered by Arnel E. / Tue, Dec 06
Question: I have a 06 2500hd with a 4L80 I want a bigger radiator than the 1 inch thick one that it comes with factory will this fit my truck?Daniel G. / Oct 28, 2022
Hi Daniel, I'm glad to assist you. We suggest reaching our Sales Team at 1-866-529-0412 with the VIN for them to check the compatibility of this radiator to the truck. I hope this helps, and happy shopping.
AE
Staff
Answered by Arnel E. / Fri, Oct 28
Question: does this fit 1GTHK24GX3E122324?2500HD / Sep 03, 2020
Hi Fidelito,
Yes, this fits the 2003 GMC Sierra 2500HD models with 5-speed automatic transmission.
WARNING: This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
