Soft Caterpillar 5667037-00. C280-12 DUAL ECM 60hz 900RPM Low Nox 3460bkw,BR 36344,WO 46675,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