Problems with your 1994-04 Mustang fuel pressure regulator? Find direct replacements at 5.0 Resto. Your fuel pressure regulator plays a huge role in your fuel system by distributing the right amount of fuel to your motor. Finding the right regulator for your setup is easy at Latemodelrestoration.com. We offer adjustable performance regulators from top brands such as BBK, Professional Products, and Aeromotive.