Cda lifter with hydraulic control feed from outside the engine block

An engine block assembly, comprising:

• an engine block;
• a lifter assembly housed inside the engine block and comprising:
• a lifter comprising a latching mechanism, the latching mechanism being switchable between a latched position and an unlatched position, and
• a slot arranged on an outer wall of the lifter and comprising an inlet that provides access to the latching mechanism;
• and
• a pin mounted from outside of the engine block and comprising a fluid channel;
• wherein the pin is configured to interface with the slot such that the lifter is prevented from rotation about a lifter axis, and wherein the fluid channel is configured to be fluidly coupled to the inlet of the slot.