Genuine OEM Jaguar Control Chain Cover Stud Bolt, part number AJ814127. This stud bolt is specifically designed to securely fasten the control chain cover to the engine block, ensuring a tight seal and protecting the timing chain assembly. It is a critical component within the engine's timing system. Weighing 0.025 kg, this bolt is manufactured to exact specifications. Using a genuine OEM stud bolt guarantees the correct thread pitch, material strength, and torque specifications, which are vital for maintaining engine integrity and preventing component failure.