Allows previous Radium Engineering adjustable fuel pressure regulators to upgrade to RA-Series specifications. Features tool-less pressure adjustment—a simple turn of the knob increases or decreases pressure with 1psi per click incremental detents.
Includes a newly designed stainless steel return orifice for laminar flow stability (minimum 18.5psi), and a 360-degree swiveling vacuum reference port with double O-ring sealing. Comes with four interchangeable vacuum fittings: barbed, 3AN male, push-to-connect, and vacuum plug.
Compatible with all Radium Direct Mount, Multi-Port, and Damper regulators, plus fuel hangers with integrated regulators. Works with all gasoline types and alcohol blends including E85.
