Genuine OEM Jaguar Primary Timing Chain Guide, part number AJ814096. This essential engine component is responsible for guiding and maintaining proper tension on the primary timing chain, ensuring accurate valve timing. It is located on the left side of the engine's timing chain assembly. Weighing 0.04 kg, this guide is engineered for high durability under constant engine operation. Using a genuine OEM timing chain guide guarantees the correct material composition, precise dimensions, and optimal performance for maintaining critical engine timing and preventing catastrophic engine damage.