Genuine OEM Jaguar Step Tappet, part number C2C40076. This component transfers motion from the camshaft to the valve stem, ensuring accurate valve opening and closing in the engine's valvetrain. It is a critical part of the cylinder head assembly. Weighing approximately 0.037 kg, this tappet is engineered to precise factory tolerances. Using a genuine OEM tappet ensures correct valvetrain geometry and durability, preventing premature wear and maintaining optimal engine performance.