10-2015 OTTAWA 4X2 SPOTTER TRUCKS ISB Engines and DEF Hours: 9000-19,700 CUMMINS ENGINES ALLISION 3000 RDS TRANS 12,000 LB FRONT AXLE 30,000 LB REAR AXLE 7.83: 1 GEAR RATIO MERITOR RS23186 REAR END HOLLAND FIFTH WHEEL