Main and Rod Bearing Set +0.50mm Infiniti QX30 Q50 Q60 2.0L M274 12117HG00G

Severe engine bearing wear in the Mercedes-designed M274 engine is often the result of oil starvation or extreme thermal stress, leading to significant scoring on the crankshaft journals. When a crankshaft requires professional machining to restore its surface, standard bearings no longer provide the necessary oil clearance. This +0.50mm (+0.020in) oversized main and rod bearing set is specifically engineered to accommodate a ground crankshaft, restoring factory-spec oil pressure and bottom-end stability. Manufactured with high-strength materials, these bearings ensure the engine can reliably handle the boost pressures of the Q50 and QX30 while preventing future metal-to-metal contact and catastrophic failure.