BBK billet fuel pressure regulators are a great way to tune your vehicle to obtain optimum air fuel ratios and achieve maximum horsepower with the simple adjustment screw located on top. Each BBK Performance fuel pressure regulator is made from high quality CNC Machined billet aluminum and is hand assembled and pressure tested with a precision leak free diaphragm that will allow fuel pressure adjustment to approximately 65psi. Every BBK Performance fuel pressure regulator is a direct replacements for your stock factory OEM pre set regulator and offer the best performance and value. All units have an anodized finish for great looks and long lasting finish. - Does NOT fit 97 GT Mustang