M57 PCV Plate Hose Connection:12AN Male Fitting Please see the product instruction

Please see the product instruction document linked below for a more in depth description of what this adjustment does

a counterbored brass plug is included to replace it

Bronze valve guide set for BMW M57 custom made by SI Products in Simi Valley CA

PLUMBING- ATM opted to utilize the factory plumbing on this application

Our personal test car has logged over 25k miles with the OEM EKP and the Walbro 535 with no issues

M57 PCV Plate Hose Connection:12AN Male Fitting Please see the product instructionThis plate replaces the OEM PCV vacuum diaphragm housing on the valve cover to enable hooking up a catch can system cleanly. The plate is available with a 12AN male bung or 3 4" (19mm) hose barb machined integrally. New stainless socket head cap screws are included along with a 1 4" left hand drill bit to remove the OEM pentagon security screws. CNC machined in house from 6061 aluminum!