Actively regulates lash adjuster supply pressure to a constant 15psi by restricting flow instead of dumping extra pressure like the JDM regulator. Reduces oil flow into the head, keeping more oil in the pan and can greatly improve oil pressure at the end of a 1/4 mile pass. Air bleed at the highest point helps oil quality and aeration to lash adjusters.

Vehicle Fitment:
Mitsubishi 4G63
1992-2006 Evolution I-IX
1990-1999 Eclipse GST/GSX
1990-1998 Talon TSi
1990-1994 Laser RS
1991-1992 Galant VR4

Includes:
(1) Regulator
(1) Gasket