It is inserted into the designated slot on the camshaft.
To be 100% certain, check the engine serial number (ESN),
the return line and turbocharger may vary depending on the CPL,
year, and turbo configuration.
The part is installed longitudinally in the engine block. It operates the valvetrain via tappets, pushrods, and rocker arms, controlling the opening of the intake and exhaust valves and—depending on the engine configuration—the operation of the injectors.
Important: do not confuse part 4004556 with 4004556-20, which some catalogs identify as a different camshaft. To order the correct part, you must compare the number with the engine’s CPL and ESN.