Soft Caterpillar 5667036-00. C280-12 DUAL ECM 60hz 900RPM 3460bkw, BR36381, WO45412R1, CEAL_T4F_BETA_2.14.1, CE_T4F_PROD_1.5.2, BE_T4F_PROD_1.5, DEC 17 2018 C280 Tier 2 Engine Software