This fitting is a must! This fitting will work on SR/KA/RB fuel Rails. What this fitting does is allow you to rotate the fuel pressure regulator 360degrees. When installing a Greddy or ISIS style Intake Manifold for the S13 SR20, it is always a problem to have to modify the fuel pressure regulator because it hits the manifold. Now with this fitting you can rotate the FPR so it is vertical instead of horizontal. This allows for PERFECT fitment. This Fitting includes O-Ring (already installed) for the rail, (2) Allen bolts, and a new piece of Vaccum tubing This is a headache saver and will save you much time from customizing your stock regulator.
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