Compatible Engine Codes: N20B20A, N20B20B, N20B20C, N20B20D, N20 B20 A, N20 B20 B, N20 B20 C, N20 B20 D. MAIN CRANKSHAFT BEARING. Our products incorporate Piston Ring, Main and Big End Bearing, Oil Pump, Crankshaft, Crankshaft Pulley, Piston, Full Gasket Set, and so on.