Chevrolet C4500 Kodiak 2003-2009 V8 8.1L Inlet From Radiator (Lower) To Engine Block. GMC C4500 Topkick 2003-2009 V8 8.1L Inlet From Radiator (Lower) To Engine Block. Chevrolet C5500 Kodiak 2003-2009 V8 8.1L Inlet From Radiator (Lower) To Engine Block.