550 C/15 Cat 13 speed transmission 370 rears , new Holland 5th wheel with slider 11r 24 5 virgin drives and steers with 40,000 miles new king pins , bushings &tie rods ends new radiator & espar bunk heater still in boxOn Sep-15-16 at 08:04:37 PDT, seller added the following information:my husband and I have been the only two drivers in this truck since we bought it in 2004 its been a good running truck and we have kept it very clean.