Kiggly 4G63 HLA Pressure Regulator

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.