Soft Caterpillar 4677867-00. C280-16 PROP DUAL ECM 1000RPM 5650bkw,BR 36230,WO 46907,CEAL_T4F_BETA_2.14.2, CE_T4F_PROD_1.5.2, BE_T4F_PROD_1.5.2, DEC 10 2018 C280 Tier 2 Engine Software