Get your Cummins X15 back to peak performance with our full inframe overhaul kits, cross-referenced with popular OEM numbers like 5579454, 5693737, and 4352597. These kits are designed for X15 CM2350 and CM2450 engines, commonly found in 2017 and newer trucks. All kits include 152mm liners, forged pistons, gaskets, and bearings—precision-matched for OEM reliability. We stock trusted rebuild brands like AFA, Interstate-McBee, and PAI to meet the demands of fleets and owner-operators alike.