BBK Performance Parts 1706K Billet Adjustable Fuel Pressure Regulator & Gauge Ki. Billet Adjustable Fuel Pressure Regulator & Gauge Kit. 1986-93 Mustang 302/351 Includes. BBK Billet Adjustable Fuel Pressure Regulator. JEGS 5.0L Fuel Pressure Gauge Kit. Around here, we don’t just sell parts – we rely on them when driving our own cars around racetracks, […]