Help keep coolant, engine oil and transmission fluid at working temperature with the Spectra Premium radiator CU2948, a complete cross-flow unit for GM trucks and SUVs with the V8-8.1L engine. It is a direct-fit replacement for many vehicles, among them the 2007 Chevrolet Silverado 2500 HD Classic 8.1L, 2007 GMC Sierra 2500 HD Classic 8.1L and 2003-2006 Chevrolet Avalanche 2500 8.1L; see the Buyer's Guide tab for the full list.
Spectra Premium builds the structure and design of its radiators to carry the same durability and expectations as the original equipment unit.
Signs a radiator may need replacing include engine overheating, coolant leaks and damaged or corroded core fins. These symptoms can have other causes, so diagnose the cooling system before replacing the radiator. The listed applications use one radiator, and this listing is for one complete radiator. Country of origin: China.
Interchange: 21492 · 8012948 · 2948 · C2948 · 15193106 · 15913006 · 89018320 · 89018444 · 89019168 · RAD2948 · 2932 · 412948 · 438059 · 9467 · RA2948C
This part cross-references / interchanges with the following part numbers:
Which vehicles does the Spectra Premium CU2948 fit?
It fits the 2007 Chevrolet Silverado 2500 HD Classic 8.1L, 2007 GMC Sierra 2500 HD Classic 8.1L, 2003-2006 Chevrolet Avalanche 2500 8.1L and more; see the Buyer's Guide tab for the full list.
Does this radiator include engine and transmission oil coolers?
Yes. It has an internal plated engine oil cooler with 4 plates and an internal plated transmission oil cooler with 5 plates, each with quick-connect fittings spaced 11.5 in apart.
What is the core made of and how big is it?
The single-row core is aluminum and measures 37.8125 in high, 19.1875 in wide and 1.25 in thick. It is paired with plastic tanks in a cross-flow design.
Is a frame included with the radiator?
No, a frame is not included. The radiator uses a bottom post / top saddle mounting arrangement.
What are signs my radiator may need replacing?
Signs include engine overheating, coolant leaks and damaged or corroded fins. These can have other causes, so diagnose the cooling system before replacing the radiator.
WARNING: These products can expose you to chemicals including lead and phthalates, which are 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.
