Overhaul your 1991 Jeep 4.0L/242 OHV L6 12V with the Enginetech RMJ242A Remain/Re-Ring Kit. This kit provides high-quality components for a dependable engine overhaul. Includes piston rings (R38856), rod bearings (BB612J), main bearings (BC468J), and full gasket set (J242-47). Free shipping included. Note: Kit photo is generic; actual parts shown individually. Rod and Main bearings are offered as the same size. Contact us for different sizes.