Ford XL1Z-6L266-AA - TENSIONER - TIMING C 4.6L 5.4L 6.8L Timing Chain Tensioner (Left) XL1Z-6L266-AA These come with the 1L3Z-6P250-AA Retaining Clips already installed. Genuine Ford OEM Fits 6.8L, 5.4L, 4.6L, 3V and some 2V engines