(Used) 2005 Mercedes OM904LA, ENGINE ECM- Serial Number: 900910R4201918 Part Number: A0434479540/001, Certification Number: 904LA_04c_170/0420, Calibration Date: 11-2012, Engine: P-44830 For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921