Genuine OEM Kia Crankshaft Bearing Pair Set, part number 2102004015. This bearing set is vital for supporting the crankshaft's rotation within the engine block, minimizing friction and wear. These bearings are positioned around the crankshaft journals, allowing for smooth and efficient engine operation. Choosing genuine OEM bearings ensures factory-specified tolerances and material quality, which are critical for vibration-free service life and the overall longevity of the engine.