Spectra Premium Radiator P/N:CU768
Spectra Premium CU2733 front radiator for the 2005-2009 Cadillac STS V6 3.6L or V8 4.6L, the 2006-2009 STS V8 4.4L and other vehicles moves engine coolant through its core to shed heat. Its structure and design are built to the same durability expectations as the OE radiator.
A radiator that leaks at the tanks or core, a coolant level that keeps dropping or an engine that runs hotter than normal can all be signs it is failing. Before you replace the radiator, rule out a loose hose, a sticking thermostat or a weak water pump, since each can overheat an engine on its own. Check the coolant level only with the engine cool.
This radiator is a direct-fit replacement for the 2005-2009 Cadillac STS V6 3.6L or V8 4.6L and the 2006-2009 STS V8 4.4L. It is also a direct-fit radiator for the 2004-2007 Cadillac SRX V6 3.6L or V8 4.6L.
Fit and size
Build and materials
One radiator; the vehicle takes one. A frame, an engine oil cooler and a transmission oil cooler are not included.
Is this a 2005 Cadillac STS radiator for the V6 3.6L or V8 4.6L?
Yes. Spectra Premium CU2733 is a front radiator that fits the 2005 Cadillac STS with the V6 3.6L or V8 4.6L engine, and the vehicle takes one.
How big is the core on this Spectra Premium radiator?
The CU2733 has a single-row aluminum core 23.625 inches high, 20.375 inches wide and 1 inch thick. Its inlet and outlet are each 1.3125 inch in diameter.
Does the CU2733 radiator come with a frame or oil coolers?
No. This listing is one radiator; a frame, an engine oil cooler and a transmission oil cooler are not included.
How can I tell if a plastic-tank radiator like this one is worn?
Coolant seepage or crusty residue at the tanks or core, a falling coolant level or an engine running hotter than normal can be signs of a radiator problem. Look only with the engine cool; a shop can pressure-test the system.
Is the CU2733 a cross-flow radiator, and what are its tanks made of?
Yes. This radiator is cross flow, with the inlet at the bottom left and the outlet at the bottom right. The tanks are plastic and the core is aluminum.
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.