20 0 Thermo King Auxiliary Power Unit (APU) for a 2006 Freightliner Columbia 120 $450 USD Used, Auxiliary power unit off a 2006 Freightliner Columbia 120 truck, The casting number is not visible. The part number is not visible. This APU is in decent shape it has rust around the... ConditionUsedFits To Make(s)FreightlinerFits To Model(s)Columbia 120Will Fit Year(s)2006Part Number220374-11Stock Number220374-11 MLS Number11563227CategoryAuxiliary Power Units (APU) Last Updated11/5/2024 LocationKankakee, IL, US Sold ByRiver Valley Truck Parts (844) 604-___ SHOWNUMBERCall Seller Email Seller Save More Info