Genuine OEM Hyundai Exhaust Camshaft, part number 2420004170. This vital engine component is responsible for precisely controlling the timing and lift of the exhaust valves, ensuring efficient expulsion of combustion gases from the cylinders. It is located within the cylinder head as part of the valve train assembly. Using a genuine OEM camshaft ensures factory-specified lobe profiles and material hardness, critical for accurate valve timing, reliable engine operation, and long service life.