Genuine OEM Jaguar Oil Pump Balancing Chain Tensioner, part number C2Z29196. This vital component is responsible for maintaining the correct tension on the oil pump balancing chain, preventing slack and ensuring smooth, quiet operation of the oil pump. It plays a critical role in the engine's lubrication system. Made from durable green plastic with an integrated metal spring, this tensioner weighs 0.044 kg. Opting for a genuine OEM chain tensioner ensures precise spring calibration, correct material durability, and exact fitment, which are essential for reliable chain operation and preventing premature wear or failure.