This is a brand new Cat 6.6 ACERT EPA complaint engine for sale. Engine Serial# C6E58677 Arrangement number #4618933. This Cat C6.6 ACERT engine fits in Cat Excavators M313, M318, M315, M316, M322D, Cat loaders 559, 928H, 938H, 930H, 938H, Cat motor graders 120M, Cat Paving CB64, CB56, CB56, CB74, CS56, CS64, CS74, Cat Farm Tractor CHALLENGER MT525B, MT535, MT545, MT555, MT565, MT575, Massey Ferguson tractors MF5445, MF5455, MF5460, MF5465, MF5475, MF6445, MF6455, MF6465, MF6475, MF6480, MF7465,