This high pressure pump is used for your direct-injected vehicle. They will usually fail when the camshaft follower wears through and destroys the pump shaft or they can't put out the proper pressure after it has aged.
This direct injection high pressure fuel pump kit includes the high pressure fuel pump and seal, the camshaft follower, and mounting bolts.
There are 2 high pressure fuel pumps per engine. 1 kit replaces 1 high pressure fuel pump.