1. genuine cummins parts 2. model 4B,6B,6C,NT855,KTA19,KTA38,KTA50 3. competitive price and qucik delivery ... ” bore x 3.500” stroke504-1 8.3 504.5 6C / 6CT / 6CTA 8.3 6 114mm bore x 135mm stroke ... V903 8 5.500” bore x 4.750” stroke1150-1 18.8 1150 KT19 / 1150 6 6.250” bore x 6 ... to contact us. Genuine cummins!! cummins engine parts 4B,6B,6C,6L,NT855,KT19,KT38,KTA50