The Filt-o-reg Adjustable Fuel Pressure Regulator is a high-quality performance part designed for auto enthusiasts looking to enhance their fuel system. Made in the United States, this red-colored regulator from the reputable brand Filt-o-reg promises optimal fuel pressure control for improved performance and racing experience. With the manufacturer part number 1-5, this adjustable fuel pressure regulator is a must-have accessory for those seeking to optimize their fuel system for better efficiency and power output. USED.