This major overhaul kit is assembled with all the parts to completely overhaul your Ingersoll Rand compressor pump. Major overhaul kits (MOKs) includes bronze Connecting Rods, Crankpin Bushings, main bearings, gasket kit, piston ring set, intake and discharge valves, oil seal, and air filter element to rebuild one Type 30, Model 242/242-B Major Overhaul Kit compatible with Ingersoll Rand. It includes the level II, level III, and level IV step saver kits so you do not have to buy each separately. This kit includes IR compatible part # 32127375, 32127383 and 32127391. This is not a Ingersoll Rand product but it is compatible with Ingersoll Rand Parts. This is a Private-label product.