Blox Universal Adjustable Fuel Pressure Regulator 3 Port Black BXFU-00411-BKB. Car Make: Universal Car Model: Universal Engine: Universal. The BLOX Racing Competition 3-Port adjustable FPRs are designed to offer high performance and reliability. Each FPR unit comes pre-assembled from BLOX and is guaranteed to offer consistency each time the engine is turned on. These billet […]