Fuel Pressure Regulator 6-Port Bypass Style Fuel Pressure Regulator – 3 to 12 psi – In-Line – 8 AN O-Ring Inlet – Four 8 AN O-Ring Outlets – 10 AN O-Ring Return – 1/8 in NPT Port – Aluminum – Blue / Purple Anodized – E85 / Gas / Methanol – Each. Share