(0-15) PSI Fuel Pressure Gauge Not Liquid Filled 2007 Ford Mustang a simple 10mm socket will

a simple 10mm socket will do the trick (assuming you can find it)

For builders who want high quality nylon fiber braided hose that is more durable with an inner stainless steel reinforcement braid over a a Chlorinated Polyethylene (CPE) synthetic rubber

5L exhaust manifolds are made from thicker-walled high silicone ductile iron designed to resist thermal warping

and the polyurethane rear bushings improve handling

(0-15) PSI Fuel Pressure Gauge Not Liquid Filled 2007 Ford Mustang a simple 10mm socket willEngineered for the serious street enthusiast, these gauges guarantee precise fuel pressure settings from 0 to 100 psi. Each comes with an easy to read face. These gauges have a chrome plated steel case with 1 8" NPT male inlet. Available in both liquid filled and non liquid filled models. Designed to withstand severe vibration to extend service and performance for automotive and marine usage.