0 Mack Other, , ECMs, Fits to: , (Used) Mack ENGINE ECM - Part Number: 0281020006, Serial Number: 12MS526M, 030804 28RTF239, 38804, 7441-3494 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# 12MS526M, Part# 0281020006,