Soft Caterpillar 5667051-00. C280-16 DUAL ECM DEP 50hz 1000RPM 4920bkw,BRNo. 36356,WO 46916,CEAL_T4F_BETA_2.14.2, CE_T4F_PROD_1.5.2, BE_T4F_PROD_1.5.2, DEC 17 2018 C280 Tier 2 Engine Software