Proflow Fuel Pressure Regulator, Carburettor Series II, 3-10 PSI, 2-Port, -06AN, Billet Aluminium, Universal - PFEFS13220Part Number: PFEFS13220 Proflow's Carburetted adjustable fuel pressure regulators are excellent upgrades from the standard popular 2 port designs. With stainless steel internals, this regulator's diaphragm re seats after the needle shuts down, preventing pressure creep. They are ideal for carburettor and dedicated nitrous applications where higher flow, quicker response, and less pressure creep are desired. Black anodised, e85 compatible, and supplied