2007 GM/Chev (HD) V8, 4.8L, Gas, Truck Delivery, ECMs, Fits to: Workhorse Custom Chassis W62, (Used) 2006 GM/ Chev (HD), ENGINE ECM- Part Number: 12597116, Serial Number: 86YKYW926209J1SK, Serv Number: 12602801, HDW Number: 12589161, Engine:P-32331, Displacement: 8.1L, Horsepower: 320, 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# 86YKYW926209J1SK, Casting# 86YKYW926209J1SK, Truck Year 2007 5B4MPG2G773421941