ZFIDDY1

My radiator developed the common crack on the upper drivers side and needs to be replaced. Car is a 2007 Z51 manual. I keep reading that they changed the design during this period and went from having an inlet and outlet on each side (for a total of 4) for the engine and transmission cooling, to 2 on the passenger side and an external radiator inf front of the steering rack.

Here’s the thing......I have 2 inlets and outlets on each side of the radiator (for a total of 4 line fittings on the radiator), AND said external cooler in front of the rack.....my question is what are these 3 cooling features on my car, and what does each cool? Engine, transmission, and steering?

Sure, I could get under the car and trace everything back, but I need to order this radiator in a few hours and that’s just not possible because the car is not in my possession currently. Im given to understand that I need a *10353889, correct?

jaredtxrx

The 4 fittings that go into the radiator are engine oil and transmission fluid lines for cooling.
The external cooler on the steering rack is the power steering fluid cooler.

Your part number appears to be correct.
https://www.cultragfactoryparts.com/...YtMGwtdjgtZ2Fz

ZFIDDY1

Perfect, thanks!