OEM Regulator, HLA Oil Pressure: DSM/EVO

Genuine OEM part.

This is the OEM component, located in the head, that regulates the oil pressure to the (HLA) hydraulic lash adjusters (often called "lifters").

Oftentimes, when purchasing a used head, this component will be damaged or missing. If that's the case, there's no need to try to scare up a used one, you can simply purchase new.

Incidently, Mitsu refers to this part as an "oil delivery body".

Applications:
DSM (1990-99).
EVO (I-IX).