We also sell Perkins replacement 1106D-E66TA which is similar to Cat C6.6 ACERT engine. This engine fits in CAT 323D - Dozer CAT D6N - Loader CAT 938H - Crawler Loader 963D, CATERPILLAR 963D, 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,