1999 Mack E7, Truck Delivery, ECMs, Fits to: Mack RD690S, (Used) 1999 Mack RD690S ENGINE ECM - Part Number: 0281001522, Serial Number: 12MS514M, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# N/A, Truck Year 1999, VIN 1M2P264C1XM029179 1M2P264C1XM029179