Big end bearings are located at the large end of the connecting rod where it attaches to the crankshaft journal. They endure extreme forces from combustion and piston inertia. Failure of these bearings, often signaled by a loud knocking sound, is a leading cause of catastrophic engine failure. Our big end bearing sets are designed for high load capacity and wear resistance. They provide the precise clearance and robust surface needed to handle the punishing environment inside the engine, protecting both the crankshaft journals and the connecting rods.