FITS CUMMINS X15 EPA21 IN-FRAME OVERHAUL KIT W/150MM APR LINER + THERMOSTAT & PISTON COOLING NOZZLES X15 450 CM2450 CPL'S: 5535 5348 Contents: A4393172 O-RING 1 AFA-CK5579276 CYLINDER KIT COMPLETE - 150MM LINER 6 A2882087 CONNECTING ROD BEARING SET - FRACTURE SPLIT RODS 6 A5633630 MAIN BEARING SET - STD 1 A5406187 HEAD GASKET SET W/ VALVE COVER GASKET 1 A4298975 HEX HEAD NUT 4 A4318947 THERMOSTAT - 180 DEGREE 1 A3689396 PISTON COOLING NOZZLE 6 A4357177 OIL BYPASS VALVE PLUNGER 1 A3689587 HIGH TEMPERATURE STUD 4 A4026684 OIL PAN GASKET 1