2006 Caterpillar C15, Engine Assys, (GOOD USED & TEST RUN & INTERNALLY INSPECTED) 2006 Caterpillar C15 ACERT Diesel Engine, DUAL TURBO, NXS-Serial # Prefix, MXS, On-Highway Application, Fits 2004 2005 2006, 120-PIN ECM, Fam # 6CPXH0928EBK, 475HP RATED, 550HP Max Rating, AR# 2945881, Short Block # 10R4404, Long Block # 10R4412, Long Block# 20R9106, Engine Serial # NXS09094, Stock# 7685 ***ECM SOLD SEPARATELY***