Fuel Rail
WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
The fuel rail is located on the LH (left-hand) side of the engine below the intake manifold. The rail is attached to the head with 5 bolts. The fuel rail also secures the 4 fuel injectors in position. An O ring seal on each injector locates in a bore in the rail. As the rail is tightened to the cylinder head the fuel injectors are retained between the rail and cylinder head.